@Override
    public boolean equals(Object o) {
      if (this == o) return true;
      if (o == null || getClass() != o.getClass()) return false;

      DiamondInferenceResult that = (DiamondInferenceResult)o;

      if (myErrorMessage != null ? !myErrorMessage.equals(that.myErrorMessage) : that.myErrorMessage != null) return false;
      if (!myInferredTypes.equals(that.myInferredTypes)) return false;

      return true;
    }
@Override
    public boolean equals(Object o)