Question, use onClose() to close the popover

[gilav]

Hello

The code is a bit old now, and some elements gave me problem because of this : GlyphIcon and some other few dependencies that have changed. But I manage to use the 2 components.

Now I have a question (not related much to the code):

• How to use the onClose() button that one can put on the popover to close the popover? Impossible to find a working example on the web.
  So a popover with a close button on it, working...

thanks

Gilles