code: private static boolean multiPointContainsMultiPoint_(
  			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 (!envelopeInfContainsEnvelope_(env_a, env_b, tolerance))
  			return false;
  
  		return multiPointCoverageMultiPoint_(multipoint_b, multipoint_a,
  				tolerance, true, false, false, progress_tracker);
  	}
docs: Returns true if multipoint_a contains multipoint_b.