def raise_record_not_found_exception!(ids = nil, result_size = nil, expected_size = nil, key = primary_key, not_found_ids = nil) # :nodoc:
      conditions = arel.where_sql(@klass)
      conditions = " [#{conditions}]" if conditions
      name = @klass.name

      if ids.nil?
        error = +"Couldn't find #{name}"
        error << " with#{conditions}" if conditions
        raise RecordNotFound.new(error, name, key)
      elsif Array(ids).size == 1
        error = "Couldn't find #{name} with '#{key}'=#{ids}#{conditions}"
        raise RecordNotFound.new(error, name, key, ids)
      else
        error = +"Couldn't find all #{name.pluralize} with '#{key}': "
        error << "(#{ids.join(", ")})#{conditions} (found #{result_size} results, but was looking for #{expected_size})."
        error << " Couldn't find #{name.pluralize(not_found_ids.size)} with #{key.to_s.pluralize(not_found_ids.size)} #{not_found_ids.join(', ')}." if not_found_ids
        raise RecordNotFound.new(error, name, key, ids)
      end
    end
def raise_record_not_found_exception!(ids = nil, result_size = nil, expected_size = nil, key = primary_key, not_found_ids = nil) # :nodoc:
      conditions = arel.where_sql(@klass)
      conditions = " [#{conditions}]" if conditions
      name = @klass.name

      if ids.nil?
        error = +"Couldn't find #{name}"
        error << " with#{conditions}" if conditions
        raise RecordNotFound.new(error, name, key)
      elsif Array(ids).size == 1
        error = "Couldn't find #{name} with '#{key}'=#{ids}#{conditions}"
        raise RecordNotFound.new(error, name, key, ids)
      else
        error = +"Couldn't find all #{name.pluralize} with '#{key}': "
        error << "(#{ids.join(", ")})#{conditions} (found #{result_size} results, but was looking for #{expected_size})."
        error << " Couldn't find #{name.pluralize(not_found_ids.size)} with #{key.to_s.pluralize(not_found_ids.size)} #{not_found_ids.join(', ')}." if not_found_ids
        raise RecordNotFound.new(error, name, key, ids)
      end
    end
This method is called whenever no records are found with either a single
 id or multiple ids and raises an ActiveRecord::RecordNotFound exception.

 The error message is different depending on whether a single id or
 multiple ids are provided. If multiple ids are provided, then the number
 of results obtained should be provided in the +result_size+ argument and
 the expected number of results should be provided in the +expected_size+
 argument.