@Override
	long getKey(int index) {
		return buffer.getLong(getKeyOffset(index));
	}
Construct a new long-key fixed-length record leaf node.
@param nodeMgr table node manager instance
@param recordLength fixed record length
@param prevLeafId node buffer id for previous leaf ( &lt; 0: no leaf)
@param nextLeafId node buffer id for next leaf ( &lt; 0 : no leaf)
@throws IOException thrown if IO error occurs
Ghidra/Framework/DB/src/main/java/db/FixedRecNode.java