code: private static boolean multiPointEqualsMultiPoint_(MultiPoint multipoint_a,
  			MultiPoint multipoint_b, double tolerance,
  			ProgressTracker progress_tracker) {
  		Envelope2D env_a = new Envelope2D(), env_b = new Envelope2D();
  		multipoint_a.queryEnvelope2D(env_a);
  		multipoint_b.queryEnvelope2D(env_b);
  
  		if (!envelopeEqualsEnvelope_(env_a, env_b, tolerance, progress_tracker))
  			return false;
  
  		if (multiPointExactlyEqualsMultiPoint_(multipoint_a, multipoint_b,
  				tolerance, progress_tracker))
  			return true;
  
  		return multiPointCoverageMultiPoint_(multipoint_a, multipoint_b,
  				tolerance, false, true, false, progress_tracker);
  	}
docs: Returns true if multipoint_a equals multipoint_b.