Everything we get back from AWS is transformed into an array. Many of these, however, have only one element, because the corresponding XML consists of a parent element containing only a single child element.

This class consists solely to allow single element arrays to pass a method call down to their one element, thus obviating the need for lots of references to foo[0] in user code.

For example, the following:

 items = resp.item_search_response[0].items[0].item

can be reduced to:

 items = resp.item_search_response.items.item