public DataType findMyDataTypeFromOriginalID(long originalId) {
		Long myId = dataTypeIDMap.getViewIDFromOriginalID(originalId);
		return myId != null ? getDataType(myId) : null;
	}
Find a resolved DB-datatype within this manager based upon its source datatype's ID 
within the original datatype manager associated with this manager.  This method is 
useful when attempting to matchup a datatype within this manager to one which has changed
within the original datatype manager.

@param originalId datatype ID within original datatype manager
@return matching DB-datatype or null if not found
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/compositeeditor/CompositeViewerDataTypeManager.java