FixedKeyNode appendNewLeaf(DBRecord record) throws IOException {
		FixedKeyRecordNode newLeaf = createNewLeaf(-1, -1);
		newLeaf.insertRecord(0, record);
		return appendLeaf(newLeaf);
	}
Append a new leaf and insert the specified record.
@param record data record with long key
@return root node which may have changed.
@throws IOException thrown if IO error occurs
Ghidra/Framework/DB/src/main/java/db/FixedKeyRecordNode.java