code: def get_license(self):
          
          if 'license' in self._my_map:
              license_text = self._my_map['license']
              return DisplayText(display_text_map=license_text)
          return DisplayText(text='',
                             language_type=types.Language().get_type_data('DEFAULT'),
                             format_type=types.Format().get_type_data('DEFAULT'),
                             script_type=types.Script().get_type_data('DEFAULT'))
docs: Gets the terms of usage.
  
          An empty license means the terms are unknown.
  
          return: (osid.locale.DisplayText) - the license
          *compliance: mandatory -- This method must be implemented.*