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: explicit_decryption_context.rb
    path of file: ./repos/mongo-ruby-driver/lib/mongo/crypt
    
    the code of the file until where you have to start completion: # frozen_string_literal: true
# rubocop:todo all

# Copyright (C) 2019-2020 MongoDB Inc.
#
# Licensed under the Apache License, Version 2.0 (the
    
      def initialize(mongocrypt, io, doc)
        super(mongocrypt, io)

        # Initialize the underlying mongocrypt_ctx_t object to perform
        # explicit decryption
        Binding.ctx_explicit_decrypt_init(self, doc)
      end
    end