get-definitions/interactions-panel-parent in drscheme:unit:frame
This method is provided so that tools can add
area-container<%>s to the drscheme frame. Override this method so that it
returns a child of the super-classes's result and insert new
children inbetween.
( -> (instanceof send a-drscheme:unit:frame get-definitions/interactions-panel-parent)vertical-panel%)
Returns the result of
get-area-container