module GraphQL::Schema::Member::HasArguments::ArgumentClassAccessor

def argument_class(new_arg_class = nil)
  if new_arg_class
    @argument_class = new_arg_class
  elsif defined?(@argument_class) && @argument_class
    @argument_class
  else
    superclass.respond_to?(:argument_class) ? superclass.argument_class : GraphQL::Schema::Argument
  end
end