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: environment.rb
    path of file: ./repos/symmetric-encryption/lib/symmetric_encryption/keystore
    
    the code of the file until where you have to start completion: module SymmetricEncryption
  module Keystore
    # Store the encrypted encryp
    
      def write(key)
        encrypted_key = key_encrypting_key.encrypt(key)
        puts "\n\n********************************************************************************"
        puts "Set the environment variable as follows:"
        puts "  export #{key_env_var}=\"#{encoder.encode(encrypted_key)}\""
        puts "********************************************************************************"
      end