def send_attribute_versions(document)
      collaborative_model.collaborative_attributes.each do |attribute_name|
        attribute = document.collaborative_attribute(attribute_name)

        transmit(
          document_id: document.id,
          action: 'attribute',
          attribute: attribute_name,
          version: attribute.version
        )
      end
    end
def send_attribute_versions(document)
      collaborative_model.collaborative_attributes.each do |attribute_name|
        attribute = document.collaborative_attribute(attribute_name)

        transmit(
          document_id: document.id,
          action: 'attribute',
          attribute: attribute_name,
          version: attribute.version
        )
      end
    end
Send out initial versions