Stack.generateTransform() method generates SVG transforms for the stack,
sets them as attributes, and returns the original stack.
Stack stack.generateTransforms(Object transforms)
Stack.generateTransforms() method takes a single argument,
an object with the following properties containing the transforms
|Number||The number of degrees to rate the stack around its center|
|Boolean||Whether to flip the stack along the X axis|
|Boolean||Whether to flip the stack along the Y axis|