title: Capture the label of an actionButton once it is clicked
body: <p>Is it possible to capture the label of an actionButton once it is clicked?</p>
  
  <p>Imagine I have 3 buttons on my ui.R and depending on which one I click I want to perform a different action on the server.R.</p>
  
  <p>One caveat is that the buttons are created dynamically on the server.R with dynamic labels (thus the necessity of capturing the label on click)</p>
  
  <p>Thanks</p>