add_comment

# File lib/rdoc/class_module.rb, line 126
  def add_comment comment, location
    return unless document_self

    original = comment

    comment = case comment
              when RDoc::Comment then
                comment.normalize
              else
                normalize_comment comment
              end

    @comment_location.delete_if { |(_, l)| l == location }

    @comment_location << [comment, location]

    self.comment = original
  end