def wrap_dataset(dataset)
      if relation.is_a?(Relation::Composite)
        relation.new(dataset).to_a
      else
        dataset
      end
    end
def wrap_dataset(dataset)
      if relation.is_a?(Relation::Composite)
        relation.new(dataset).to_a
      else
        dataset
      end
    end
Pipes a dataset through command's relation

 @return [Array]

 @api private