code: function MultiPoint(input){
      if(input && input.type === "MultiPoint" && input.coordinates){
        extend(this, input);
      } else if(isArray(input)) {
        this.coordinates = input;
      } else {
        throw "Terraformer: invalid input for Terraformer.MultiPoint";
      }
  
      this.type = "MultiPoint";
    }
docs: /*
  GeoJSON MultiPoint Class
  new MultiPoint();
  new MultiPoint([[x,y], [x1,y1]]);
  new MultiPoint({
  type: "MultiPoint",
  coordinates: [x,y]
  });