# File lib/fog/compute/openstack/models/metadata.rb, line 24
        def get(key)
          requires :parent
          data = service.get_metadata(collection_name, @parent.id, key).body["meta"]
          metas = []
          data.each_pair { |k, v| metas << {"key" => k, "value" => v} }
          new(metas[0])
        rescue Fog::Compute::OpenStack::NotFound
          nil
        end