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: dispatcher.rb
    path of file: ./repos/rails_event_store/ruby_event_store/lib/ruby_event_store
    
    the code of the file until where you have to start completion: # frozen_string_literal: tr
    
    def verify(subscriber)
      begin
        subscriber_instance = Class === subscriber ? subscriber.new : subscriber
      rescue ArgumentError
        false
      else
        subscriber_instance.respond_to?(:call)
      end