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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_accessibility_type_metadata(self):
 """Gets the metadata for an accessibility type. return: (osid.Metadata) - metadata for the accessibility types *compliance: mandatory -- This method must be implemented.* """

        # Implemented from template for osid.logging.LogEntryForm.get_priority_metadata
        metadata = dict(self._mdata['accessibility_type'])
        metadata.update({'existing_type_values': self._my_map['accessibilityTypeId']})
        return Metadata(**metadata)