private DataTypeManager getManagerById(DataTypeManagerService service) {
		DataTypeManager[] mgs = service.getDataTypeManagers();
		for (DataTypeManager dtm : mgs) {
			if (dtm.getUniversalID().equals(dataTypeManagerId)) {
				return dtm;
			}
		}
		return null;
	}
Uses the given service and its {@link DataTypeManager}s to find the data type 
represented by this url

@param service the service
@return the data type; null if there was an error restoring the type, such as if the
        parent {@link DataTypeManager} has been closed
Ghidra/Features/Base/src/main/java/ghidra/app/util/datatype/DataTypeUrl.java