code: protected boolean isCommitable(Object visitable) {
      return (visitable instanceof Auditable && (target == null || identity(visitable) == identity(target)));
    }
docs: Determines whether the specified visitable object is commit-able.  The object is commit-able if the object
  is Auditable and this Visitor is not targeting a specific object in the application domain object graph
  hierarchy.
  
  @param visitable the visited object being evaluated for commit-ability.
  @return a boolean value indicating whether the targeted object can be committed.
  @see org.cp.elements.lang.Auditable