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: message_verifier.rb
    path of file: ./repos/stackneveroverflow/vendor/bundle/ruby/2.3.0/gems/activesupport-5.0.3/lib/active_support
    
    the code of the file until where you have to start completion: require 'base64'
require 'active_support/core_ext/object/blank'
require 'active_support/security_utils'

module ActiveSupport
  # +MessageVerifier+ makes it easy to generate and veri
    
    def verified(signed_message)
      if valid_message?(signed_message)
        begin
          data = signed_message.split("--".freeze)[0]
          @serializer.load(decode(data))
        rescue ArgumentError => argument_error
          return if argument_error.message =~ %r{invalid base64}
          raise
        end