btreePlusElementMgr.getLastRecordPositionInFile());
NonTerminalPage nonTerminalPage = new NonTerminalPage(1, true);
nonTerminalPage.setKey(0, new DataRecordIdentifier());
pageRecordable = nonTerminalPage;
pageRecordable.updateByteSize();
assertNull(MUST_BE_NOT_STORED, pageRecordable.getPageRecord());
btreePlusElementMgr.appendPageRecordable(pageRecordable);
pageRecordable.setValueIsChangedValueToSave();
pageRecord = pageRecordable.getPageRecord();
assertNotNull(MUST_BE_STORED, pageRecord);