def to(form)
      @form = form
      @form.id = source.id
      for group, type_attr_map in @map
        for type, attr_definition in type_attr_map
          setup_form(group, type, attr_definition)
        end
      end
    end
def to(form)
      @form = form
      @form.id = source.id
      for group, type_attr_map in @map
        for type, attr_definition in type_attr_map
          setup_form(group, type, attr_definition)
        end
      end
    end
Converts @source to an ingest form