Your options are:
- The get() method of the component which searches for a component at a specific path.
- An iterator() on the MarkupContainer which has all his children.
- Use the visitChildren() that has all children and grandchildren of a
MarkupContainer.
visitChildren()
returns ComponentHierachyIterator which in turn has a method which has a method filterById() that returns anotherComponentHierachyIterator
with the filtered component(s).