Missing property decorator on SerializationInfo.round_trip

[viccie30]

In src/serializers/type_serializers/function.rs SerializationInfo::round_trip is defined as a property:

pydantic-core/src/serializers/type_serializers/function.rs

Lines 557 to 558 in 061711f

	#[pyo3(get)]
	round_trip: bool,

In python/pydantic_core/core_schema.py SerializationInfo.round_trip is defined as a method, however:

pydantic-core/python/pydantic_core/core_schema.py

Line 152 in 061711f

def round_trip(self) -> bool: ...

Trying to call SerializationInfo.round_trip in a model validator fails with a TypeError:

Error calling function `serialize_model`: TypeError: 'bool' object is not callable
  File "<source file>", line 108, in serialize_model
    round_trip=info.round_trip(),
               ^^^^^^^^^^^^^^^^^
TypeError: 'bool' object is not callable

The fix is simple, I think, just mark SerializationInfo.round_trip as a property in python/pydantic_core/core_schema.py. This fixes the type checking issues for my code. I don't have a full Rust development environment installed, so I can't test whether any other changes are needed.

[davidhewitt]

Thanks for the report. This assessment looks correct to me; I've opened #1542.