whether to return the distance from the Position to the Center, or from the Center to the bottom or right side of the Bounds
Return Value
Returns the minimum space reserved above and below this node, in document coordinates
Remarks
The default implementation returns 0 for nodes that do not correspond to top-level Go objects. For nodes that do correspond to top-level Go objects, the layer space is determined by the width or height of the object depending on the Direction. By default this adds 10 to the space, to account for port end segment lengths.