version</a></li><li data-type='method' style='display: none;'><a href="Document.html#has_acroform">has_acroform</a></li><li data-type='method' style='display: none;'><a href="Document.html#file_size">file_size</a></li><li data-type='method' style='display: none;'><a href="Document.html#is_signed">is_signed</a></li><li data-type='method' style='display: none;'><a href="Document.html#incremental_save_count">incremental_save_count</a></li><li data-type='method' style='display: none;'><a href="Document.html#has