You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: metadata.rb
    path of file: ./repos/transpec/lib/transpec/syntax/mixin
    
    the code of the file until where you have to start completion: # coding: utf-8

require 'active_support/concern'
require 'transpec/syntax
    
        def metadata_nodes
          return arg_nodes if arg_nodes.empty?

          # The first argument must be always description.
          non_description_arg_nodes = arg_nodes.drop(1)

          non_description_arg_nodes.drop_while do |node|
            # Possibly there still may be descriptions after the first arg.
            #   describe 'something', '#some_method', :foo, bar: true { }
            ![:hash, :sym].include?(node.type)
          end
        end