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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 can(self, *args, **kwargs):
        '''Overwrite this method to implement custom contextual permissions'''
        if isinstance(self.require, auth.Permission):
            return self.require.can()
        elif callable(self.require):
            return self.require()
        elif isinstance(self.require, bool):
            return self.require
        else:
            return True