def find_item(name, item_type = nil)
      link = find_item_link(name)
      item = VCloudSdk::CatalogItem.new(@session, link)
      check_item_type(item, item_type)
      item
    end
def find_item(name, item_type = nil)
      link = find_item_link(name)
      item = VCloudSdk::CatalogItem.new(@session, link)
      check_item_type(item, item_type)
      item
    end
Find catalog item from catalog by name and type.
 If item_type is set to nil, returns catalog item as long as its name match.
 Raises an exception if catalog is not found.
 Raises ObjectNotFoundError if an item matching the name and type is not found.
 Otherwise, returns the catalog item.