private boolean keyRangesContain(List<KeyRange> keyRanges, long key) {
		for (KeyRange range : keyRanges) {
			if (range.contains(key)) {
				return true;
			}
		}
		return false;
	}
Return total number of keys covered by list of keyRanges.
@param keyRanges key ranges to get the number of keys
@return number of keys, or -1 if more than Long.MAX_VALUE keys
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/DBObjectCache.java