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: row.rb
    path of file: ./repos/occams-record/lib/occams-record/results
    
    the code of the file until where you have to start completion: module OccamsRecord
  module Results
    #
    # Abstract class for result
    
      def can_define_ids_reader?(assoc)
        model = self.class._model
        self.class.associations.include?(assoc) &&
         (ref = model.reflections[assoc]) &&
         !ref.polymorphic? &&
         (ref.macro == :has_many || ref.macro == :has_and_belongs_to_many)
      end