From 91c1c0b03628622667bdf04c7e02f593dd731ab4 Mon Sep 17 00:00:00 2001
From: Yuchao Yan <yuchaoyan@microsoft.com>
Date: Wed, 12 Jun 2024 07:08:07 +0800
Subject: [PATCH] Remove unnecessary doc for model which is only used for
 output (#2629)

---
 .chronus/changes/add-usage-2024-5-11-16-39-4.md   |  8 ++++++++
 .../autorest/codegen/models/model_type.py         | 15 +++++++++++++++
 .../codegen/templates/model_dpg.py.jinja2         |  2 ++
 packages/typespec-python/src/types.ts             |  1 +
 .../authentication/apikey/models/_models.py       |  1 -
 .../authentication/http/custom/models/_models.py  |  1 -
 .../authentication/oauth2/models/_models.py       |  1 -
 .../clientgenerator/core/access/models/_models.py | 11 -----------
 .../specs/azure/core/basic/models/_models.py      |  2 --
 .../azure/core/lro/standard/models/_models.py     |  1 -
 .../specs/azure/core/traits/models/_models.py     |  2 --
 .../azure/mgmt/spheredpg/models/_models.py        |  3 ---
 .../azurecore/lro/rpc/models/_models.py           |  3 ---
 .../payload/contentnegotiation/models/_models.py  |  1 -
 .../payload/pageable/models/_models.py            |  1 -
 .../model/singlediscriminator/models/_models.py   |  2 --
 .../typetest/model/usage/models/_models.py        |  1 -
 .../typetest/union/models/_models.py              | 10 ----------
 .../authentication/apikey/models/_models.py       |  1 -
 .../authentication/http/custom/models/_models.py  |  1 -
 .../authentication/oauth2/models/_models.py       |  1 -
 .../payload/contentnegotiation/models/_models.py  |  1 -
 .../payload/pageable/models/_models.py            |  1 -
 .../model/singlediscriminator/models/_models.py   |  2 --
 .../typetest/model/usage/models/_models.py        |  1 -
 .../typetest/union/models/_models.py              | 10 ----------
 26 files changed, 26 insertions(+), 58 deletions(-)
 create mode 100644 .chronus/changes/add-usage-2024-5-11-16-39-4.md

diff --git a/.chronus/changes/add-usage-2024-5-11-16-39-4.md b/.chronus/changes/add-usage-2024-5-11-16-39-4.md
new file mode 100644
index 00000000000..990536c1eaa
--- /dev/null
+++ b/.chronus/changes/add-usage-2024-5-11-16-39-4.md
@@ -0,0 +1,8 @@
+---
+changeKind: internal
+packages:
+  - "@autorest/python"
+  - "@azure-tools/typespec-python"
+---
+
+Remove unnecessary doc for model which is only used for output
\ No newline at end of file
diff --git a/packages/autorest.python/autorest/codegen/models/model_type.py b/packages/autorest.python/autorest/codegen/models/model_type.py
index f113ac7604b..4fdf393a950 100644
--- a/packages/autorest.python/autorest/codegen/models/model_type.py
+++ b/packages/autorest.python/autorest/codegen/models/model_type.py
@@ -3,6 +3,7 @@
 # Licensed under the MIT License. See License.txt in the project root for
 # license information.
 # --------------------------------------------------------------------------
+from enum import Enum
 from collections import OrderedDict
 from typing import Any, Dict, List, Optional, TYPE_CHECKING, cast
 import sys
@@ -24,6 +25,15 @@
     from .code_model import CodeModel
 
 
+class UsageFlags(Enum):
+    Default = 0
+    Input = 2
+    Output = 4
+    ApiVersionEnum = 8
+    JsonMergePatch = 16
+    MultipartFormData = 32
+
+
 def _get_properties(type: "ModelType", properties: List[Property]) -> List[Property]:
     for parent in type.parents:
         # here we're adding the properties from our parents
@@ -72,6 +82,11 @@ def __init__(
         self.snake_case_name: str = self.yaml_data["snakeCaseName"]
         self.page_result_model: bool = self.yaml_data.get("pageResultModel", False)
         self.cross_language_definition_id: Optional[str] = self.yaml_data.get("crossLanguageDefinitionId")
+        self.usage: int = self.yaml_data.get("usage", 0)
+
+    @property
+    def is_usage_output(self) -> bool:
+        return self.usage == UsageFlags.Output.value
 
     @property
     def flattened_property(self) -> Optional[Property]:
diff --git a/packages/autorest.python/autorest/codegen/templates/model_dpg.py.jinja2 b/packages/autorest.python/autorest/codegen/templates/model_dpg.py.jinja2
index 048de17212c..afffb7f94e5 100644
--- a/packages/autorest.python/autorest/codegen/templates/model_dpg.py.jinja2
+++ b/packages/autorest.python/autorest/codegen/templates/model_dpg.py.jinja2
@@ -14,8 +14,10 @@
     {% endif %}
     {% if (model.properties | selectattr('optional', "equalto", false) | first) is defined %}
 
+    {% if not model.is_usage_output %}
     All required parameters must be populated in order to send to server.
     {% endif %}
+    {% endif %}
 
     {% if model.properties != None %}
         {% for p in model.properties %}
diff --git a/packages/typespec-python/src/types.ts b/packages/typespec-python/src/types.ts
index 535cdb08a1f..faded4b4445 100644
--- a/packages/typespec-python/src/types.ts
+++ b/packages/typespec-python/src/types.ts
@@ -219,6 +219,7 @@ function emitModel<TServiceOperation extends SdkServiceOperation>(
         base: type.isGeneratedName && fromBody ? "json" : "dpg",
         internal: type.access === "internal",
         crossLanguageDefinitionId: type.crossLanguageDefinitionId,
+        usage: type.usage,
     };
 
     typesMap.set(type, newValue);
diff --git a/packages/typespec-python/test/azure/generated/authentication-api-key/authentication/apikey/models/_models.py b/packages/typespec-python/test/azure/generated/authentication-api-key/authentication/apikey/models/_models.py
index 628c2d9047c..686832c5e2f 100644
--- a/packages/typespec-python/test/azure/generated/authentication-api-key/authentication/apikey/models/_models.py
+++ b/packages/typespec-python/test/azure/generated/authentication-api-key/authentication/apikey/models/_models.py
@@ -16,7 +16,6 @@
 class InvalidAuth(_model_base.Model):
     """InvalidAuth.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar error: Required.
     :vartype error: str
diff --git a/packages/typespec-python/test/azure/generated/authentication-http-custom/authentication/http/custom/models/_models.py b/packages/typespec-python/test/azure/generated/authentication-http-custom/authentication/http/custom/models/_models.py
index 628c2d9047c..686832c5e2f 100644
--- a/packages/typespec-python/test/azure/generated/authentication-http-custom/authentication/http/custom/models/_models.py
+++ b/packages/typespec-python/test/azure/generated/authentication-http-custom/authentication/http/custom/models/_models.py
@@ -16,7 +16,6 @@
 class InvalidAuth(_model_base.Model):
     """InvalidAuth.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar error: Required.
     :vartype error: str
diff --git a/packages/typespec-python/test/azure/generated/authentication-oauth2/authentication/oauth2/models/_models.py b/packages/typespec-python/test/azure/generated/authentication-oauth2/authentication/oauth2/models/_models.py
index 628c2d9047c..686832c5e2f 100644
--- a/packages/typespec-python/test/azure/generated/authentication-oauth2/authentication/oauth2/models/_models.py
+++ b/packages/typespec-python/test/azure/generated/authentication-oauth2/authentication/oauth2/models/_models.py
@@ -16,7 +16,6 @@
 class InvalidAuth(_model_base.Model):
     """InvalidAuth.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar error: Required.
     :vartype error: str
diff --git a/packages/typespec-python/test/azure/generated/azure-client-generator-core-access/specs/azure/clientgenerator/core/access/models/_models.py b/packages/typespec-python/test/azure/generated/azure-client-generator-core-access/specs/azure/clientgenerator/core/access/models/_models.py
index dcba9bfb323..b50c2bf4004 100644
--- a/packages/typespec-python/test/azure/generated/azure-client-generator-core-access/specs/azure/clientgenerator/core/access/models/_models.py
+++ b/packages/typespec-python/test/azure/generated/azure-client-generator-core-access/specs/azure/clientgenerator/core/access/models/_models.py
@@ -23,7 +23,6 @@ class AbstractModel(_model_base.Model):
     You probably want to use the sub-classes and not this class directly. Known sub-classes are:
     RealModel
 
-    All required parameters must be populated in order to send to server.
 
     :ivar kind: Required. Default value is None.
     :vartype kind: str
@@ -41,7 +40,6 @@ class AbstractModel(_model_base.Model):
 class BaseModel(_model_base.Model):
     """Used in internal operations, should be generated but not exported.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar name: Required.
     :vartype name: str
@@ -54,7 +52,6 @@ class BaseModel(_model_base.Model):
 class InnerModel(_model_base.Model):
     """Used in internal operations, should be generated but not exported.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar name: Required.
     :vartype name: str
@@ -67,7 +64,6 @@ class InnerModel(_model_base.Model):
 class InternalDecoratorModelInInternal(_model_base.Model):
     """Used in an internal operation, should be generated but not exported.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar name: Required.
     :vartype name: str
@@ -80,7 +76,6 @@ class InternalDecoratorModelInInternal(_model_base.Model):
 class NoDecoratorModelInInternal(_model_base.Model):
     """Used in an internal operation, should be generated but not exported.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar name: Required.
     :vartype name: str
@@ -93,7 +88,6 @@ class NoDecoratorModelInInternal(_model_base.Model):
 class NoDecoratorModelInPublic(_model_base.Model):
     """Used in a public operation, should be generated and exported.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar name: Required.
     :vartype name: str
@@ -123,7 +117,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class OuterModel(BaseModel):
     """Used in internal operations, should be generated but not exported.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar name: Required.
     :vartype name: str
@@ -138,7 +131,6 @@ class OuterModel(BaseModel):
 class PublicDecoratorModelInInternal(_model_base.Model):
     """Used in an internal operation but with public decorator, should be generated and exported.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar name: Required.
     :vartype name: str
@@ -168,7 +160,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class PublicDecoratorModelInPublic(_model_base.Model):
     """Used in a public operation, should be generated and exported.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar name: Required.
     :vartype name: str
@@ -198,7 +189,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class RealModel(AbstractModel, discriminator="real"):
     """Used in internal operations, should be generated but not exported.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar name: Required.
     :vartype name: str
@@ -213,7 +203,6 @@ class RealModel(AbstractModel, discriminator="real"):
 class SharedModel(_model_base.Model):
     """Used by both public and internal operation. It should be generated and exported.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar name: Required.
     :vartype name: str
diff --git a/packages/typespec-python/test/azure/generated/azure-core-basic/specs/azure/core/basic/models/_models.py b/packages/typespec-python/test/azure/generated/azure-core-basic/specs/azure/core/basic/models/_models.py
index f0743b767f6..00e9c66cacc 100644
--- a/packages/typespec-python/test/azure/generated/azure-core-basic/specs/azure/core/basic/models/_models.py
+++ b/packages/typespec-python/test/azure/generated/azure-core-basic/specs/azure/core/basic/models/_models.py
@@ -22,7 +22,6 @@ class FirstItem(_model_base.Model):
 
     Readonly variables are only populated by the server, and will be ignored when sending a request.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar id: The id of the item. Required.
     :vartype id: int
@@ -67,7 +66,6 @@ class SecondItem(_model_base.Model):
 
     Readonly variables are only populated by the server, and will be ignored when sending a request.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar name: The name of the item. Required.
     :vartype name: str
diff --git a/packages/typespec-python/test/azure/generated/azure-core-lro-standard/specs/azure/core/lro/standard/models/_models.py b/packages/typespec-python/test/azure/generated/azure-core-lro-standard/specs/azure/core/lro/standard/models/_models.py
index 3ff18586a68..7685ebcf776 100644
--- a/packages/typespec-python/test/azure/generated/azure-core-lro-standard/specs/azure/core/lro/standard/models/_models.py
+++ b/packages/typespec-python/test/azure/generated/azure-core-lro-standard/specs/azure/core/lro/standard/models/_models.py
@@ -16,7 +16,6 @@
 class ExportedUser(_model_base.Model):
     """The exported user data.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar name: The name of user. Required.
     :vartype name: str
diff --git a/packages/typespec-python/test/azure/generated/azure-core-traits/specs/azure/core/traits/models/_models.py b/packages/typespec-python/test/azure/generated/azure-core-traits/specs/azure/core/traits/models/_models.py
index 63310893e8e..39aedab4dbc 100644
--- a/packages/typespec-python/test/azure/generated/azure-core-traits/specs/azure/core/traits/models/_models.py
+++ b/packages/typespec-python/test/azure/generated/azure-core-traits/specs/azure/core/traits/models/_models.py
@@ -18,7 +18,6 @@ class User(_model_base.Model):
 
     Readonly variables are only populated by the server, and will be ignored when sending a request.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar id: The user's id. Required.
     :vartype id: int
@@ -82,7 +81,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class UserActionResponse(_model_base.Model):
     """User action response.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar user_action_result: User action result. Required.
     :vartype user_action_result: str
diff --git a/packages/typespec-python/test/azure/generated/azure-mgmt-spheredpg/azure/mgmt/spheredpg/models/_models.py b/packages/typespec-python/test/azure/generated/azure-mgmt-spheredpg/azure/mgmt/spheredpg/models/_models.py
index 28ab6462388..029671f8253 100644
--- a/packages/typespec-python/test/azure/generated/azure-mgmt-spheredpg/azure/mgmt/spheredpg/models/_models.py
+++ b/packages/typespec-python/test/azure/generated/azure-mgmt-spheredpg/azure/mgmt/spheredpg/models/_models.py
@@ -344,7 +344,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class CountElementsResponse(_model_base.Model):
     """Response of the count for elements.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar value: Number of children resources in parent resource. Required.
     :vartype value: int
@@ -374,7 +373,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class CountDevicesResponse(CountElementsResponse):
     """Response to the action call for count devices in a catalog.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar value: Number of children resources in parent resource. Required.
     :vartype value: int
@@ -735,7 +733,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class DeviceInsight(_model_base.Model):
     """Device insight report.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar device_id: Device ID. Required.
     :vartype device_id: str
diff --git a/packages/typespec-python/test/azure/generated/azurecore-lro-rpc/azurecore/lro/rpc/models/_models.py b/packages/typespec-python/test/azure/generated/azurecore-lro-rpc/azurecore/lro/rpc/models/_models.py
index ccd4d53fd8e..e3a5c34c7f6 100644
--- a/packages/typespec-python/test/azure/generated/azurecore-lro-rpc/azurecore/lro/rpc/models/_models.py
+++ b/packages/typespec-python/test/azure/generated/azurecore-lro-rpc/azurecore/lro/rpc/models/_models.py
@@ -20,7 +20,6 @@
 class Error(_model_base.Model):
     """The error object.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar code: One of a server-defined set of error codes. Required.
     :vartype code: str
@@ -103,7 +102,6 @@ class GenerationResponse(_model_base.Model):
 
     Readonly variables are only populated by the server, and will be ignored when sending a request.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar id: The unique ID of the operation. Required.
     :vartype id: str
@@ -149,7 +147,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class GenerationResult(_model_base.Model):
     """Result of the generation.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar data: The data. Required.
     :vartype data: str
diff --git a/packages/typespec-python/test/azure/generated/payload-content-negotiation/payload/contentnegotiation/models/_models.py b/packages/typespec-python/test/azure/generated/payload-content-negotiation/payload/contentnegotiation/models/_models.py
index 3830cdebf9d..494ca7fe6b9 100644
--- a/packages/typespec-python/test/azure/generated/payload-content-negotiation/payload/contentnegotiation/models/_models.py
+++ b/packages/typespec-python/test/azure/generated/payload-content-negotiation/payload/contentnegotiation/models/_models.py
@@ -16,7 +16,6 @@
 class PngImageAsJson(_model_base.Model):
     """PngImageAsJson.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar content: Required.
     :vartype content: bytes
diff --git a/packages/typespec-python/test/azure/generated/payload-pageable/payload/pageable/models/_models.py b/packages/typespec-python/test/azure/generated/payload-pageable/payload/pageable/models/_models.py
index 6526110ff37..049927c4388 100644
--- a/packages/typespec-python/test/azure/generated/payload-pageable/payload/pageable/models/_models.py
+++ b/packages/typespec-python/test/azure/generated/payload-pageable/payload/pageable/models/_models.py
@@ -16,7 +16,6 @@
 class User(_model_base.Model):
     """User model.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar name: User name. Required.
     :vartype name: str
diff --git a/packages/typespec-python/test/azure/generated/typetest-model-singlediscriminator/typetest/model/singlediscriminator/models/_models.py b/packages/typespec-python/test/azure/generated/typetest-model-singlediscriminator/typetest/model/singlediscriminator/models/_models.py
index da760f45728..cc0574a07c2 100644
--- a/packages/typespec-python/test/azure/generated/typetest-model-singlediscriminator/typetest/model/singlediscriminator/models/_models.py
+++ b/packages/typespec-python/test/azure/generated/typetest-model-singlediscriminator/typetest/model/singlediscriminator/models/_models.py
@@ -63,7 +63,6 @@ class Dinosaur(_model_base.Model):
     You probably want to use the sub-classes and not this class directly. Known sub-classes are:
     TRex
 
-    All required parameters must be populated in order to send to server.
 
     :ivar kind: Required. Default value is None.
     :vartype kind: str
@@ -240,7 +239,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class TRex(Dinosaur, discriminator="t-rex"):
     """The second level legacy model in polymorphic single level inheritance.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar size: Required.
     :vartype size: int
diff --git a/packages/typespec-python/test/azure/generated/typetest-model-usage/typetest/model/usage/models/_models.py b/packages/typespec-python/test/azure/generated/typetest-model-usage/typetest/model/usage/models/_models.py
index 9cb337ae741..4007ec4f71d 100644
--- a/packages/typespec-python/test/azure/generated/typetest-model-usage/typetest/model/usage/models/_models.py
+++ b/packages/typespec-python/test/azure/generated/typetest-model-usage/typetest/model/usage/models/_models.py
@@ -76,7 +76,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class OutputRecord(_model_base.Model):
     """Record used in operation return type.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar required_prop: Required.
     :vartype required_prop: str
diff --git a/packages/typespec-python/test/azure/generated/typetest-union/typetest/union/models/_models.py b/packages/typespec-python/test/azure/generated/typetest-union/typetest/union/models/_models.py
index 85dedd6982c..9996952f288 100644
--- a/packages/typespec-python/test/azure/generated/typetest-union/typetest/union/models/_models.py
+++ b/packages/typespec-python/test/azure/generated/typetest-union/typetest/union/models/_models.py
@@ -126,7 +126,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class GetResponse(_model_base.Model):
     """GetResponse.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar prop: Required.
     :vartype prop: ~typetest.union.models.MixedTypesCases
@@ -156,7 +155,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class GetResponse1(_model_base.Model):
     """GetResponse1.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar prop: Required.
     :vartype prop: ~typetest.union.models.MixedLiteralsCases
@@ -186,7 +184,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class GetResponse2(_model_base.Model):
     """GetResponse2.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar prop: Required.
     :vartype prop: ~typetest.union.models.StringAndArrayCases
@@ -216,7 +213,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class GetResponse3(_model_base.Model):
     """GetResponse3.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar prop: Required.
     :vartype prop: ~typetest.union.models.EnumsOnlyCases
@@ -246,7 +242,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class GetResponse4(_model_base.Model):
     """GetResponse4.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar prop: Required. Is either a Cat type or a Dog type.
     :vartype prop: ~typetest.union.models.Cat or ~typetest.union.models.Dog
@@ -276,7 +271,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class GetResponse5(_model_base.Model):
     """GetResponse5.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar prop: Required. Is one of the following types: float, float, float
     :vartype prop: float or float or float
@@ -306,7 +300,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class GetResponse6(_model_base.Model):
     """GetResponse6.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar prop: Required. Is one of the following types: Literal[1], Literal[2], Literal[3]
     :vartype prop: int or int or int
@@ -336,7 +329,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class GetResponse7(_model_base.Model):
     """GetResponse7.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar prop: Required. Known values are: "b" and "c".
     :vartype prop: str or ~typetest.union.models.StringExtensibleNamedUnion
@@ -366,7 +358,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class GetResponse8(_model_base.Model):
     """GetResponse8.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar prop: Required. Is one of the following types: Literal["b"], Literal["c"], str
     :vartype prop: str or str or str
@@ -396,7 +387,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class GetResponse9(_model_base.Model):
     """GetResponse9.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar prop: Required. Is one of the following types: Literal["a"], Literal["b"], Literal["c"]
     :vartype prop: str or str or str
diff --git a/packages/typespec-python/test/unbranded/generated/authentication-api-key/authentication/apikey/models/_models.py b/packages/typespec-python/test/unbranded/generated/authentication-api-key/authentication/apikey/models/_models.py
index 37896dc9605..55d9056bc2b 100644
--- a/packages/typespec-python/test/unbranded/generated/authentication-api-key/authentication/apikey/models/_models.py
+++ b/packages/typespec-python/test/unbranded/generated/authentication-api-key/authentication/apikey/models/_models.py
@@ -16,7 +16,6 @@
 class InvalidAuth(_model_base.Model):
     """InvalidAuth.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar error: Required.
     :vartype error: str
diff --git a/packages/typespec-python/test/unbranded/generated/authentication-http-custom/authentication/http/custom/models/_models.py b/packages/typespec-python/test/unbranded/generated/authentication-http-custom/authentication/http/custom/models/_models.py
index 37896dc9605..55d9056bc2b 100644
--- a/packages/typespec-python/test/unbranded/generated/authentication-http-custom/authentication/http/custom/models/_models.py
+++ b/packages/typespec-python/test/unbranded/generated/authentication-http-custom/authentication/http/custom/models/_models.py
@@ -16,7 +16,6 @@
 class InvalidAuth(_model_base.Model):
     """InvalidAuth.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar error: Required.
     :vartype error: str
diff --git a/packages/typespec-python/test/unbranded/generated/authentication-oauth2/authentication/oauth2/models/_models.py b/packages/typespec-python/test/unbranded/generated/authentication-oauth2/authentication/oauth2/models/_models.py
index 37896dc9605..55d9056bc2b 100644
--- a/packages/typespec-python/test/unbranded/generated/authentication-oauth2/authentication/oauth2/models/_models.py
+++ b/packages/typespec-python/test/unbranded/generated/authentication-oauth2/authentication/oauth2/models/_models.py
@@ -16,7 +16,6 @@
 class InvalidAuth(_model_base.Model):
     """InvalidAuth.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar error: Required.
     :vartype error: str
diff --git a/packages/typespec-python/test/unbranded/generated/payload-content-negotiation/payload/contentnegotiation/models/_models.py b/packages/typespec-python/test/unbranded/generated/payload-content-negotiation/payload/contentnegotiation/models/_models.py
index d307971ead0..ed763a479ca 100644
--- a/packages/typespec-python/test/unbranded/generated/payload-content-negotiation/payload/contentnegotiation/models/_models.py
+++ b/packages/typespec-python/test/unbranded/generated/payload-content-negotiation/payload/contentnegotiation/models/_models.py
@@ -16,7 +16,6 @@
 class PngImageAsJson(_model_base.Model):
     """PngImageAsJson.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar content: Required.
     :vartype content: bytes
diff --git a/packages/typespec-python/test/unbranded/generated/payload-pageable/payload/pageable/models/_models.py b/packages/typespec-python/test/unbranded/generated/payload-pageable/payload/pageable/models/_models.py
index 85a995323c5..fa7c4238166 100644
--- a/packages/typespec-python/test/unbranded/generated/payload-pageable/payload/pageable/models/_models.py
+++ b/packages/typespec-python/test/unbranded/generated/payload-pageable/payload/pageable/models/_models.py
@@ -16,7 +16,6 @@
 class User(_model_base.Model):
     """User model.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar name: User name. Required.
     :vartype name: str
diff --git a/packages/typespec-python/test/unbranded/generated/typetest-model-singlediscriminator/typetest/model/singlediscriminator/models/_models.py b/packages/typespec-python/test/unbranded/generated/typetest-model-singlediscriminator/typetest/model/singlediscriminator/models/_models.py
index cfb6aa70c36..0b4dbda515a 100644
--- a/packages/typespec-python/test/unbranded/generated/typetest-model-singlediscriminator/typetest/model/singlediscriminator/models/_models.py
+++ b/packages/typespec-python/test/unbranded/generated/typetest-model-singlediscriminator/typetest/model/singlediscriminator/models/_models.py
@@ -63,7 +63,6 @@ class Dinosaur(_model_base.Model):
     You probably want to use the sub-classes and not this class directly. Known sub-classes are:
     TRex
 
-    All required parameters must be populated in order to send to server.
 
     :ivar kind: Required. Default value is None.
     :vartype kind: str
@@ -240,7 +239,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class TRex(Dinosaur, discriminator="t-rex"):
     """The second level legacy model in polymorphic single level inheritance.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar size: Required.
     :vartype size: int
diff --git a/packages/typespec-python/test/unbranded/generated/typetest-model-usage/typetest/model/usage/models/_models.py b/packages/typespec-python/test/unbranded/generated/typetest-model-usage/typetest/model/usage/models/_models.py
index 3358e746dc1..0170ae50786 100644
--- a/packages/typespec-python/test/unbranded/generated/typetest-model-usage/typetest/model/usage/models/_models.py
+++ b/packages/typespec-python/test/unbranded/generated/typetest-model-usage/typetest/model/usage/models/_models.py
@@ -76,7 +76,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class OutputRecord(_model_base.Model):
     """Record used in operation return type.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar required_prop: Required.
     :vartype required_prop: str
diff --git a/packages/typespec-python/test/unbranded/generated/typetest-union/typetest/union/models/_models.py b/packages/typespec-python/test/unbranded/generated/typetest-union/typetest/union/models/_models.py
index d0e37edd9c2..be588e55afb 100644
--- a/packages/typespec-python/test/unbranded/generated/typetest-union/typetest/union/models/_models.py
+++ b/packages/typespec-python/test/unbranded/generated/typetest-union/typetest/union/models/_models.py
@@ -126,7 +126,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class GetResponse(_model_base.Model):
     """GetResponse.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar prop: Required.
     :vartype prop: ~typetest.union.models.MixedTypesCases
@@ -156,7 +155,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class GetResponse1(_model_base.Model):
     """GetResponse1.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar prop: Required.
     :vartype prop: ~typetest.union.models.MixedLiteralsCases
@@ -186,7 +184,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class GetResponse2(_model_base.Model):
     """GetResponse2.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar prop: Required.
     :vartype prop: ~typetest.union.models.StringAndArrayCases
@@ -216,7 +213,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class GetResponse3(_model_base.Model):
     """GetResponse3.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar prop: Required.
     :vartype prop: ~typetest.union.models.EnumsOnlyCases
@@ -246,7 +242,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class GetResponse4(_model_base.Model):
     """GetResponse4.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar prop: Required. Is either a Cat type or a Dog type.
     :vartype prop: ~typetest.union.models.Cat or ~typetest.union.models.Dog
@@ -276,7 +271,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class GetResponse5(_model_base.Model):
     """GetResponse5.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar prop: Required. Is one of the following types: float, float, float
     :vartype prop: float or float or float
@@ -306,7 +300,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class GetResponse6(_model_base.Model):
     """GetResponse6.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar prop: Required. Is one of the following types: Literal[1], Literal[2], Literal[3]
     :vartype prop: int or int or int
@@ -336,7 +329,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class GetResponse7(_model_base.Model):
     """GetResponse7.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar prop: Required. Known values are: "b" and "c".
     :vartype prop: str or ~typetest.union.models.StringExtensibleNamedUnion
@@ -366,7 +358,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class GetResponse8(_model_base.Model):
     """GetResponse8.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar prop: Required. Is one of the following types: Literal["b"], Literal["c"], str
     :vartype prop: str or str or str
@@ -396,7 +387,6 @@ def __init__(self, *args: Any, **kwargs: Any) -> None:  # pylint: disable=useles
 class GetResponse9(_model_base.Model):
     """GetResponse9.
 
-    All required parameters must be populated in order to send to server.
 
     :ivar prop: Required. Is one of the following types: Literal["a"], Literal["b"], Literal["c"]
     :vartype prop: str or str or str