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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 add_chunk(self,start,end,trig_start=0,trig_end=0):
 """ Add an AnalysisChunk to the list associated with this ScienceSegment. @param start: GPS start time of chunk. @param end: GPS end time of chunk. @param trig_start: GPS start time for triggers from chunk """

    self.__chunks.append(AnalysisChunk(start,end,trig_start,trig_end))