code: def match_display_name(self, display_name, string_match_type=DEFAULT_STRING_MATCH_TYPE, match=True):
          
          self._match_display_text('displayName', display_name, string_match_type, match)
docs: Adds a display name to match.
  
          Multiple display name matches can be added to perform a boolean
          ``OR`` among them.
  
          arg:    display_name (string): display name to match
          arg:    string_match_type (osid.type.Type): the string match
                  type
          arg:    match (boolean): ``true`` for a positive match,
                  ``false`` for a negative match
          raise:  InvalidArgument - ``display_name`` is not of
                  ``string_match_type``
          raise:  NullArgument - ``display_name`` or ``string_match_type``
                  is ``null``
          raise:  Unsupported -
                  ``supports_string_match_type(string_match_type)`` is
                  ``false``
          *compliance: mandatory -- This method must be implemented.*