Macro maybe_extract_arguments_fastcall 

#[doc(hidden)]
macro_rules! maybe_extract_arguments_fastcall {
    ($description:ident, $py:ident, $args:ident, $nargs:ident, $kwargs:ident, $args_array:ident, $args_handler:ty, $kwargs_handler:ty) => { ... };
}

Available on Py_3_10 or non-Py_LIMITED_API only.