pub unsafe extern "C" fn to_string<T: GodotToString>(
instance: GDExtensionClassInstancePtr,
is_valid: *mut GDExtensionBool,
out_string: GDExtensionStringPtr,
)pub unsafe extern "C" fn to_string<T: GodotToString>(
instance: GDExtensionClassInstancePtr,
is_valid: *mut GDExtensionBool,
out_string: GDExtensionStringPtr,
)