code: public boolean negates( IAssertion other)
      {
      AssertNotLess assertion =
        other != null && other.getClass().equals( AssertNotLess.class)
        ? (AssertNotLess) other
        : null;
  
      return
        assertion != null
        && assertion.getProperty().equals( getProperty())
        && assertion.getBound() == getBound();
      }
docs: Returns true if this assertion negates the other.