class Redis::Cluster::Option

def per_node_key
  @node_opts.map do |opt|
    node_key = NodeKey.build_from_host_port(opt[:host], opt[:port])
    options = @options.merge(opt)
    options = options.merge(host: @fixed_hostname) if @fixed_hostname && !@fixed_hostname.empty?
    [node_key, options]
  end.to_h
end