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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 label_search(self, label:str) -> List[dict]:
        ''' Returns the rows in InterLex associated with that label

        Note:
            Pressumed to have duplicated labels in InterLex
        Args:
            label: label of the entity you want to find
        Returns:
            None or List[dict]
        '''
        ilx_rows = self.label2rows(self.local_degrade(label))
        if not ilx_rows:
            return None
        else:
            return ilx_rows