static boolean isEquivalent(DataTypeComponent existingDtc, DataTypeComponent dtc,
			DataTypeConflictHandler handler) {
		if (existingDtc instanceof DataTypeComponentDB existingDtcDB) {
			return existingDtcDB.isEquivalent(dtc, handler);
		}
		return existingDtc.isEquivalent(dtc);
	}
Get record key
@return record key or -1 for undefined component without a record
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/data/DataTypeComponentDB.java