title: Bokeh: Interact with legend label text
body: <p>Is there any way to interactively change legend label text in Bokeh?</p>
  
  <p>I've read <a href="https://github.com/bokeh/bokeh/issues/2274" rel="nofollow noreferrer">https://github.com/bokeh/bokeh/issues/2274</a> and <a href="https://stackoverflow.com/questions/32253900/how-to-interactively-display-and-hide-lines-in-a-bokeh-plot">How to interactively display and hide lines in a Bokeh plot?</a> but neither are applicable.</p>
  
  <p>I don't need to modify the colors or anything of more complexity than changing the label text but I can't find a way to do it.</p>