@Override
		public ConflictResult resolveConflict(DataType addedDataType, DataType existingDataType) {
//			Msg.info(
//				this,
//				"Replacing type " + existingDataType.getName() + "(" +
//					existingDataType.getDescription() + ") with " + addedDataType.getName() + "(" +
//					addedDataType.getDescription() + ")");
			return ConflictResult.REPLACE_EXISTING;
		}
<code>ConflictResult</code> indicates the resolution which should be
applied to a specific conflict
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/data/DataTypeConflictHandler.java