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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 get_text_metadata(self):
 """Gets the metadata for the text. return: (osid.Metadata) - metadata for the text *compliance: mandatory -- This method must be implemented.* """

        # Implemented from template for osid.resource.ResourceForm.get_group_metadata_template
        metadata = dict(self._mdata['text'])
        metadata.update({'existing_string_values': self._my_map['text']})
        return Metadata(**metadata)