@classmethod<EOL><INDENT>def deserialize(cls, value, *args, **kwargs):<DEDENT>
if isinstance(value, cls.TYPE):<EOL><INDENT>return value<EOL><DEDENT>elif is_null(value):<EOL><INDENT>return None<EOL><DEDENT>else:<EOL><INDENT>return value<EOL><DEDENT>
Deserialize a value just after importing it

        `cls.deserialize` should always return a value of type `cls.TYPE` or
        `None`.