def to_s
      LABELS.each_with_object([]) do |label, arr|
        object = instance_variable_get("@#{label}".to_sym)
        # If it's a plural msgstr
        if object.is_a?(Array)
          arr.push(*object.map { |entry| entry.to_s(true) }.compact)
        else
          arr << object.to_s(true) unless object.nil?
        end
      end.join
    end
def to_s
      LABELS.each_with_object([]) do |label, arr|
        object = instance_variable_get("@#{label}".to_sym)
        # If it's a plural msgstr
        if object.is_a?(Array)
          arr.push(*object.map { |entry| entry.to_s(true) }.compact)
        else
          arr << object.to_s(true) unless object.nil?
        end
      end.join
    end
Convert entry to a string

 @return [String]