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: state_change.rb
    path of file: ./repos/sequencescape/app/models
    
    the code of the file until where you have to start completion: # frozen_string_literal: true
    
  def update_state_of_target
    state_changer.new(
      labware: target,
      target_state: target_state,
      user: user,
      contents: contents,
      customer_accepts_responsibility: customer_accepts_responsibility
    ).update_labware_state
  end