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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 minimize_memory(self):
 """ Reduce the allocated memory to the minimum required to store the current audio samples. This function is meant to be called when building a wave incrementally, after the last append operation. .. versionadded:: 1.5.0 """

        if self.__samples is None:
            self.log(u"Not initialized, returning")
        else:
            self.log(u"Initialized, minimizing memory...")
            self.preallocate_memory(self.__samples_length)
            self.log(u"Initialized, minimizing memory... done")