code: @Override
    @Nonnull
    public JQueryInvocation jqinvoke (@Nonnull @Nonempty final String sMethod)
    {
      return new JQueryInvocation (this, sMethod);
    }
docs: Invoke an arbitrary function on this jQuery object.
  
  @param sMethod
  The method to be invoked. May neither be <code>null</code> nor
  empty.
  @return A new jQuery invocation object. Never <code>null</code>.