[ruby-talk:444100] Using Nebula TextAssist from Glimmer DSL for SWT

Recently, I received a support request concerning Glimmer DSL for SWT
(JRuby Desktop Development GUI Framework) and the use of Nebula Custom
Widgets, specifically the text_assist widget (auto-complete text field).

For a quick background about Nebula, it is a collection of 55+
enterprise-grade high-quality SWT (Standard Widget Toolkit) custom widgets,
including a progress circle, a password revealer, and an oscilloscope.
Thanks to Glimmer DSL for SWT, they are usable from Ruby.