code: public static UIContext getClosestContextForId(final WComponent root, final String id) {
  		return getClosestContextForId(root, id, false);
  	}
docs: Retrieves the closest context for the component with the given Id.
  <p>
  Searches visible and not visible components.
  </p>
  
  @param root the root component to search from.
  @param id the id to search for.
  @return the closest context for the component with the given id, or null if not found.