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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 trim(self, text):
 """ Trim whitespace indentation from text. """

        lines = text.splitlines()
        firstline = lines[0] or lines[1]
        indent = len(firstline) - len(firstline.lstrip())
        return '\n'.join(x[indent:] for x in lines if x.strip())