def load_cookbooks(cookbook_names)
        Strainer.ui.debug "Sandbox#load_cookbooks(#{cookbook_names.inspect})"
        cookbook_names.collect{ |cookbook_name| load_cookbook(cookbook_name) }
      end
def load_cookbooks(cookbook_names)
        Strainer.ui.debug "Sandbox#load_cookbooks(#{cookbook_names.inspect})"
        cookbook_names.collect{ |cookbook_name| load_cookbook(cookbook_name) }
      end
Load a cookbook from the given array of cookbook names

 @param [Array<String>] cookbook_names
   the list of cookbooks to search for
 @return [Array<Berkshelf::CachedCookbook>]
   the array of cached cookbooks