When user enters a JSF tag, such as:

   <h:commandButton id="submit"
                    action="response"
                    value="submit" />

    And user invokes code completion (Ctrl-Space) on action's value, the IDE could:

  1. offer a list of possible outcomes (e.g., in the above example, if 'response.xhtml'
     file already exists in the web document root, and Ctrl-Space is pressed, 'response'
     is listed)
  2. if the user enters a value that doesn't exist, the IDE automatically generates the
     file and includes necessary namespace declarations