@Override
	protected boolean refresh() {
		try {
			nameMap = null;
			valueMap = null;
			commentMap = null;
			bitGroups = null;
			DBRecord rec = adapter.getRecord(key);
			if (rec != null) {
				record = rec;
				return super.refresh();
			}
		}
		catch (IOException e) {
			dataMgr.dbError(e);
		}
		return false;
	}
Database implementation for the enumerated data type.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/data/EnumDB.java