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: transaction_aware_client.rb
    path of file: ./repos/sidekiq/lib/sidekiq
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

require "securerandom"
require "sidekiq/client"

module 
    
    def push(item)
      # 6160 we can't support both Sidekiq::Batch and transactions.
      return @redis_client.push(item) if batching?

      # pre-allocate the JID so we can return it immediately and
      # save it to the database as part of the transaction.
      item["jid"] ||= SecureRandom.hex(12)
      AfterCommitEverywhere.after_commit { @redis_client.push(item) }
      item["jid"]
    end