Optional
top: numberinset for the top edge
Optional
left: numberinset for the left edge
Optional
bottom: numberinset for the bottom edge
Optional
right: numberinset for the right edge
clone the object
compares this object to another instance
update the insets returns true if the insets changed, false if no update was required
inset for the top edge
inset for the left edge
inset for the bottom edge
inset for the right edge
update the insets by copying from another insets objects returns true if the insets changed, false if no update was required
simple data class containing edge insets for a region