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

module Mutant

  # Abstract base class mutant test framework integrations
  class Integration
    include AbstractType, Adaman
    
    def self.setup(env)
      integration_config = env.config.integration

      return Either::Left.new(INTEGRATION_MISSING) unless integration_config.name

      attempt_require(env).bind { attempt_const_get(env) }.fmap do |klass|
        klass.new(
          arguments:         integration_config.arguments,
          expression_parser: env.config.expression_parser,
          world:             env.world
        ).setup
      end
    end