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: slack_option_service.rb
    path of file: ./repos/gitlabhq/app/services/integrations
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

module Integrations
  class SlackOptionService
    UnknownOptionError = Class.new(StandardError)

 
    
    def execute
      raise UnknownOptionError, "Unable to handle option: '#{search_type}'" \
        unless option?(search_type)

      handler_class = OPTIONS[search_type]
      handler_class.new(current_user, selected_value, view_id).execute
    end