var stage = acgraph.create("container");
var linePath = stage.path();
linePath.moveTo(200, 100);
linePath.arcToByEndPoint(300, 100, 250, 50, true, true);
linePath.lineTo(250, 50);
linePath.arcToByEndPoint(180, 50, 10, 10, true, true);
linePath.stroke({color: "#2196F3"}, 2, "10 12", "round", "round");