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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 _parse(self, content):
 """Parses CLAM XML data and returns a ``CLAMData`` object. For internal use. Raises `ParameterError` exception on parameter errors."""

        if content.find('<clam') != -1:
            data = clam.common.data.CLAMData(content,self, loadmetadata=self.loadmetadata)
            if data.errors:
                error = data.parametererror()
                if error:
                    raise clam.common.data.ParameterError(error)
            return data
        else:
            return True