class RuboCop::Cop::Rails::Present

def on_and(node)
  return unless cop_config['NotNilAndNotEmpty']
  exists_and_not_empty?(node) do |var1, var2|
    return unless var1 == var2
    add_offense(node,
                message: format(MSG_EXISTS_AND_NOT_EMPTY,
                                prefer: replacement(var1),
                                current: node.source))
  end
end