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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 parsestr(self, text, headersonly=False):
 """Create a message structure from a string. Returns the root of the message structure. Optional headersonly is a flag specifying whether to stop parsing after reading the headers or not. The default is False, meaning it parses the entire contents of the file. """

        return self.parse(StringIO(text), headersonly=headersonly)