@Override
	LongKeyNode updateRecord(int index, DBRecord record) throws IOException {
		int offset = getRecordOffset(index) + KEY_SIZE;
		record.write(buffer, offset);
		return getRoot();
	}
Shift all records by one starting with index to the end.
@param index the smaller key index (0 &lt;= index1)
@param rightShift shift right by one record if true, else shift left by
one record.
Ghidra/Framework/DB/src/main/java/db/FixedRecNode.java