private EquateRefDB getEquateRefDB(long key) throws IOException {
		lock.acquire();
		try {
			EquateRefDB ref = refCache.get(key);
			if (ref == null) {
				DBRecord record = refAdapter.getRecord(key);
				ref = new EquateRefDB(this, refCache, record);
			}
			return ref;
		}
		finally {
			lock.release();
		}
	}
Send notification that the equate name changed
@param oldName old name
@param newName new name
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/symbol/EquateManager.java