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: type_filter.rb
    path of file: ./repos/openproject/app/models/queries/projects/filters
    
    the code of the file until where you have to start completion: #-- copyright
# OpenProjec
    
        def type_strategy
          # Instead of getting the IDs of all the projects a user is allowed
          # to see we only check that the value is an integer.  Non valid ids
          # will then simply create an empty result but will not cause any
          # harm.
          @type_strategy ||= ::Queries::Filters::Strategies::IntegerList.new(self)
        end