class RuboCop::Cop::Lint::DuplicateMethods

def found_attr(node, args, readable: false, writable: false)
  args.each do |arg|
    name = sym_name(arg)
    next unless name
    found_instance_method(node, name) if readable
    found_instance_method(node, "#{name}=") if writable
  end
end