def __init__(self, name, filename=None):
        self.name = name
        super(NamedRequirements, self).__init__(filename=filename)
def _try_write_with_flush(cls, fileobj, payload):
        """This method is here so that it can be patched to simulate write errors.

        This is because mock can't patch primitive objects like file objects.
        """
        fileobj.write(payload)
        fileobj.flush()