public static UniqueIdVendor closestUniqueIdVendor(UIComponent component) {
        return closest(UniqueIdVendor.class, component);
    }
Finds the first component by the given id expression or client id.

@param id The id.
@param base The base component to start the traversal.
@param separatorChar The separatorChar (e.g. :).
@param context The FacesContext.
@param callback the callback for the found component
primefaces/src/main/java/org/primefaces/util/ComponentTraversalUtils.java