@Override
 public boolean equals(final Object obj) {
   if (this == obj) return true;
   if (!(obj instanceof JobTasksMatch)) { // this should be infrequent
     if (obj == null) {
       return false;
     }
     if (!(obj instanceof IPatternMatch)) {
       return false;
     }
     IPatternMatch otherSig = (IPatternMatch) obj;
     if (!specification().equals(otherSig.specification())) return false;
     return Arrays.deepEquals(toArray(), otherSig.toArray());
   }
   JobTasksMatch other = (JobTasksMatch) obj;
   if (fJob == null) {
     if (other.fJob != null) return false;
   } else if (!fJob.equals(other.fJob)) return false;
   if (fTask == null) {
     if (other.fTask != null) return false;
   } else if (!fTask.equals(other.fTask)) return false;
   return true;
 }