class RuboCop::Cop::Rails::LinkToBlank

def append_to_rel(rel_node, corrector)
  existing_rel = rel_node.children.last.value
  str_range = rel_node.children.last.loc.expression.adjust(
    begin_pos: 1,
    end_pos: -1
  )
  corrector.replace(str_range, "#{existing_rel} noopener")
end