Allow subclasses to modify behavior on whether an OTHER edge is always added even if there are no successors.
Allow subclasses to modify behavior on whether an OTHER edge is always added even if there are no successors.

blue-systems-group/project.maybe.polyglot,xcv58/polyglot,xcv58/polyglot,liujed/polyglot-eclipse,liujed/polyglot-eclipse,xcv58/polyglot,blue-systems-group/project.maybe.polyglot,xcv58/polyglot,liujed/polyglot-eclipse,blue-systems-group/project.maybe.polyglot,blue-systems-group/project.maybe.polyglot,liujed/polyglot-eclipse