public OneLocalsArray merge(OneLocalsArray other) {
    try {
      return Merger.mergeLocals(this, other);
    } catch (SimException ex) {
      ex.addContext("underlay locals:");
      annotate(ex);
      ex.addContext("overlay locals:");
      other.annotate(ex);
      throw ex;
    }
  }
Merges this OneLocalsArray instance with another OneLocalsArray instance. A more-refined
version of {@link #merge(LocalsArray) merge} which is called by that method when appropriate.

@param other locals array with which to merge
@return this instance if merge was a no-op, or a new instance if the merge resulted in a
    change.
android/android_framework/dex-maker/src/main/java/com/android/dx/cf/code/OneLocalsArray.java