Function _embind_register_class_function 

pub unsafe extern "C" fn _embind_register_class_function(
    classType: TYPEID,
    methodName: *const c_char,
    argCount: c_uint,
    argTypes: *const TYPEID,
    invokerSignature: *const c_char,
    invoker: GenericFunction,
    context: *mut c_void,
    isPureVirtual: c_uint,
    isAsync: bool,
)