C# Signals StringName argument vs. String

[hawkerm]

I noticed trying to hook into an AnimationPlayer animation_finished event that I couldn't use the built-in string type for C# as an argument to my method in my class:

public void AnimationFinished(string animationName)
{
}

The connect dialog for the signal in Godot wouldn't find it unless I explicitly used the Godot type StringName instead:

public void AnimationFinished(StringName animationName)
{
}

It'd be nice if the C# source generator or internals or whatever controls this could do this mapping automatically?