docs: public void add(Object dependency, Object entry) {  //SKS-O
  		if (tc.isDebugEnabled())
  			Tr.debug(tc, "IMPORTANT: adding dependency " + dependency + " --> " + entry);
  		if (dependency == null) {
  			throw new IllegalArgumentException("dependency cannot be null");
  		}
  		ValueSet valueSet = (ValueSet) dependencyToEntryTable.get(dependency);
  
  		if (valueSet == null) {
  			valueSet = new ValueSet(4);
  			dependencyToEntryTable.put(dependency, valueSet);
  		}
  		valueSet.add(entry);
  	}