How do I get the upper left and lower right positions of each node

Excuse me, after reading the document, I did not find the party that can obtain the upper-left and lower-right position of the node, but only found that the location can obtain the upper-left position of the node, may I ask how to obtain the upper-left and lower-right position of the node

For top-left:

  • someNode.position, or
  • someNode.actualBounds.position, or
  • new go.Point(someNode.actualBounds.x, someNode.actualBounds.y)

For bottom-right:

  • new go.Point(someNode.actualBounds.right, someNode.actualBounds.bottom)

Thank you for your answer. Thank you