private static GraphLoopShape doCreateHollowEgdeLoop() {
		// draw an approximated circle around, and then back again
		// to make a hollow shape (so shape detection misses in middle)

		/*
		
		 Coordinate space is on a graph with 1 unit in each direction
		
				-1
		
		        |
		        |
		        |
		        |
		-1 ------------- 1
		 	    |
		 	    |
		 	    |
		 	    |
		
		 	    1
		
		
		 Origin in Java2D space--center of the graph (note that positive y is down and not up)
		
		0,0
		 ------------      1) Move up by the radius amount so we can then go down and to the left
		 |                    with each pass until we head back in the other direction.
		 |
		 |
		 |
		 |
		 |                                -.75 (assume r = 0.75)
		 								  |
		 								  |
		 								  |
		 								  |
		 							    0 -------
		
		 				   2) Move backwards (-x) and down (to 0 from -y)
		
		 				   						|
		 				   						|
		 				            -.75 -------|- 0
		 				   						|
		 				   						|
		
		
		 		 	    Each new point is the last two values in the method call
		
		 */

		// NOTE: this cubic bezier path approximates a circle
		GeneralPath path = new GeneralPath();
		float r = EDGE_LOOP_RADIUS;
		float k = BEZIER_CONTROL_POINT;

		path.moveTo(0, -r);
		path.curveTo(-k, -r, -r, -k, -r, 0);
		path.curveTo(-r, k, -k, r, 0, r);
		path.curveTo(k, r, r, k, r, 0);
		path.curveTo(r, -k, k, -r, 0, -r);

		// go back the other direction so that the shape is not an entire circle, but just the
		// outline of a circle
		path.curveTo(k, -r, r, -k, r, 0);
		path.curveTo(r, k, k, r, 0, r);
		path.curveTo(-k, r, -r, k, -r, 0);
		path.curveTo(-r, -k, -k, -r, 0, -r);

		return new GraphLoopShape(path, r);
	}
Moves the selected vertices to the end of the list of vertices so that when picked (or 
painted), we will prefer the selected vertices, since we have configured the algorithms for
the graph stuff to prefer the last accessed vertex (like when picking and painting).

@param vertices the vertices to order
@return the given vertices, ordered by selected/emphasized state
Ghidra/Framework/Graph/src/main/java/ghidra/graph/viewer/GraphViewerUtils.java