Returns the maximum of a Dimension

            TODO: conversion is not implemented yet but should be

def get_max(self,*args,**kwargs):
        """
            Returns the maximum of a Dimension

            TODO: conversion is not implemented yet but should be
        """
        if len(args) == 1:
            return self.spike_times.get_label(args[0]).max
        return [self.spike_times.get_label(a).max for a in args]