List<SnapElement> snapElements = $(ctx.getDraggable()).data(
SNAP_ELEMENTS_KEY, ArrayList.class);
int snapTolerance = handler.getOptions().getSnapTolerance();
SnapMode snapMode = handler.getOptions().getSnapMode();
int helperLeft = handler.getAbsolutePosition().left;
int helperRight = helperLeft + handler.getHelperDimension().getWidth();
int helperTop = handler.getAbsolutePosition().top;
int helperBottom = helperTop + handler.getHelperDimension().getHeight();