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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def delay( self, identifier: typing.Any, until: typing.Union[int, float]=-1, ) -> bool: """Delay a deferred function until the given time. Args: identifier (typing.Any):
 The identifier returned from a call to defer or defer_for. until (typing.Union[int, float]):
 A numeric value that represents the clock time when the callback becomes available for execution. Values that are less than the current time result in the function being called at the next opportunity. Returns: bool: True if the call is delayed. False if the identifier is invalid or if the deferred call is already executed. """

        raise NotImplementedError()