[Bug]: Parameter named ex causes compile error

[pro1dream]

Describe the bug 🐞

When using a parameter named ex in a method of an interface used by refit, there's a name clash in the generated code that prevents compilation.

Step to reproduce

• Create an interface with a method like so:

interface IMyClient 
{
    [Get("/")]
    Task MyMethodAsync(string ex);
}

• Try to compile
• You will get the following error:

error CS0136: A local or parameter named 'ex' cannot be declared in this scope because that name is used in an enclosing local scope to define a local or parameter

Reproduction repository

No response

Expected behavior

It should compile

Screenshots 🖼️

No response

IDE

Visual Studio 2022

Operating system

Windows

Version

10

Device

No response

Refit Version

7.1.0

Additional information ℹ️

No response

[ChrisPulman]

Thank you for raising this, we will see if there's a way to avoid clashing with the Source Generated code.
I assume that you are only experiencing this issue with an exact matched parameter in your Source named "ex"

[ChrisPulman]

I you happen to have a repo that demonstrates the issue, this would be very useful too, thank you.

[github-actions]

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