Added lollipop feature for updated codebase

src/dagre-wrapper/markers.js

@@ -119,6 +119,24 @@ const dependency = (elem, type) => {
     .append('path')
     .attr('d', 'M 18,7 L9,13 L14,7 L9,1 Z');
 };
+const lollipop = (elem, type, id) => {
+  elem
+    .append('defs')
+    .append('marker')
+    .attr('id', type + '-lollipopStart')
+    .attr('class', 'marker lollipop ' + type)
+    .attr('refX', 0)
+    .attr('refY', 7)
+    .attr('markerWidth', 190)
+    .attr('markerHeight', 240)
+    .attr('orient', 'auto')
+    .append('circle')
+    .attr('stroke', 'black')
+    .attr('fill', 'white')
+    .attr('cx', 6)
+    .attr('cy', 7)
+    .attr('r', 6);
+};
 const point = (elem, type) => {
   elem
     .append('marker')
@@ -250,6 +268,7 @@ const markers = {
   composition,
   aggregation,
   dependency,
+  lollipop,
   point,
   circle,
   cross,