Returns the SVG element of a marker that would be located at the specified position in the SVG. The method assumes the size and location of the current element is the rectangle specified by aRect. The method uses the MarkerStartURI, MarkerMidURI, and MarkerEndURI property to find the markers that would be displayed along the specified path. Then, it finds the element of the marker at that specified position
If no SVG element of a marker is found (or there are no markers) at the specified location, the function returns nil.
Path to place the markers
Specifies the transformation to apply to the element
Point to match with an element
Size and location of current SVG element
Defines the options for searching