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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 getSignalHeader(self, chn):
 """ Returns the header of one signal as dicts Parameters None """

        return {'label': self.getLabel(chn),
                'dimension': self.getPhysicalDimension(chn),
                                 'sample_rate': self.getSampleFrequency(chn),
                'physical_max':self.getPhysicalMaximum(chn),
                'physical_min': self.getPhysicalMinimum(chn),
                'digital_max': self.getDigitalMaximum(chn),
                'digital_min': self.getDigitalMinimum(chn),
                'prefilter':self.getPrefilter(chn),
                'transducer': self.getTransducer(chn)}