private int findHoleAfterLongKey(DBRecord[] recs, int startIx) {
		for (int i = startIx; i < recs.length - 1; i++) {
			if ((recs[i].getKey() + 1) < recs[i + 1].getKey()) {
				return i;
			}
		}
		return -1;
	}
Test key iterator.
@param testStoredDB test against a stored database if true, else test against cached database only.
@param recordCnt number of records to test
@param keyIncrement key increment, 0 = random
@param varDataSize size of variable length data fields.
@throws IOException
Ghidra/Framework/DB/src/test/java/db/DBLongKeyTableTest.java