INamedType.ToDisplayString omits delegate's parameters

[andriipatsula]

Version Used: 4.3.0

Steps to Reproduce:

SymbolDisplayFormat options:

var format = new SymbolDisplayFormat(
        globalNamespaceStyle: SymbolDisplayGlobalNamespaceStyle.Omitted,
        typeQualificationStyle: SymbolDisplayTypeQualificationStyle.NameAndContainingTypesAndNamespaces,
        delegateStyle: SymbolDisplayDelegateStyle.NameAndSignature,
        miscellaneousOptions: SymbolDisplayMiscellaneousOptions.UseSpecialTypes);

Code example:

namespace A
{
    public delegate bool SyntaxReceiverCreator(int a, bool b);
}

Expected Behavior:
as delegateStyle: SymbolDisplayDelegateStyle.NameAndSignature is active, I expect INamedType.ToDisplayString(format) produces output:

bool SyntaxReceiverCreator(int a, bool b)

Actual Behavior:
INamedType.ToDisplayString(format) produces output (without parameters):

bool A.SyntaxReceiverCreator()

From parameter description:

SymbolDisplayDelegateStyle.NameAndSignature - Shows the name and the signature of the delegate (e.g. "void SomeDelegate(int x)").

Issue in arcade: dotnet/arcade#11232

[RikkiGibson]

The A. prefix is expected since we are using SymbolDisplayTypeQualificationStyle.NameAndContainingTypesAndNamespaces.

I agree that the documentation of SymbolDisplayDelegateStyle.NameAndSignature indicates that the parameters are expected to be displayed. Let's fix that.

[CyrusNajmabadi]

@RikkiGibson i'm thinking this is by-design. The parameter controls if we want the signature or not. But then the format of the signature is controlled by SymbolDisplayParameterOptions. So i think what we want instead is to just doc NameAndSignature to indicate that Parameter options should be provided.