I want to write my own custom widget for mashups (rewrite one of the existing ones). I installed Eclipse and the Thingworx extension for it, created a project and added a new widget there. I have not changed anything and there is a standard widget template. How do I launch this widget? That is, check it visually, connect some data to it, see how it behaves in runtime? What do I need to do for this? Download the Thingworx locally and import the build of my new widget into it? Or are there any other ways?