def comments
      parse unless @parsed
      comments = get_comments
      if comments.nil? || comments.none?
        nil
      else
        comments.map { |c| c.squeeze(Constants::SPACE) }
      end
    end
def comments
      parse unless @parsed
      comments = get_comments
      if comments.nil? || comments.none?
        nil
      else
        comments.map { |c| c.squeeze(Constants::SPACE) }
      end
    end
Returns an array of comments that are in the email, or nil if there
 are no comments

  a = Address.new('Mikel Lindsaar (My email address) <mikel@test.lindsaar.net>')
  a.comments #=> ['My email address']

  b = Address.new('Mikel Lindsaar <mikel@test.lindsaar.net>')
  b.comments #=> nil