We recently upgraded to Jira 4.0. We had a pending configuration issue, to which we found some kind of solutions:

• http://confluence.atlassian.com/display/JIRA/Using+validators+to+make+custom+fields+required+on+transition+screens
• http://confluence.atlassian.com/display/JIRAEXT/JIRA+Suite+Utilities
  Both Links and the solutions proposed there seem to be deprecated, for Jira 4.

So my question where is the workaround for the much wanted feature: "Make a (Custom)Field required in a certain Workflow transition"
How can this be set up in Jira 4?