code: public int writeDependency(Object id, ValueSet vs) { // SKS-O
          int returnCode = htod.writeDependency(id, vs);
          if (returnCode == HTODDynacache.DISK_EXCEPTION) {
              stopOnError(this.htod.diskCacheException);
          }
          return returnCode;
      }
docs: Call this method to write a dependency id with a collection of cache ids to the disk.
  
  @param id
  - dependency id.
  @param vs
  - a collection of cache ids.