code: def _GetLink(self):
      
      if self._link is None:
        self._link = ''
        if self.entry_type != definitions.FILE_ENTRY_TYPE_LINK:
          return self._link
  
        link = self._fsapfs_file_entry.symbolic_link_target
        if link and link[0] != self._file_system.PATH_SEPARATOR:
          # TODO: make link absolute.
          self._link = '/{0:s}'.format(link)
  
      return self._link
docs: Retrieves the link.
  
      Returns:
        str: path of the linked file.