def get(self):
custom_arg = {}<EOL>if self.key is not None and self.value is not None:<EOL><INDENT>custom_arg[self.key] = self.value<EOL><DEDENT>return custom_arg<EOL>
Get a JSON-ready representation of this CustomArg.

:returns: This CustomArg, ready for use in a request body.
:rtype: dict