in lib/rdoc/context.rb [617:629]
def any_content(includes = true)
@any_content ||= !(
@comment.empty? &&
@method_list.empty? &&
@attributes.empty? &&
@aliases.empty? &&
@external_aliases.empty? &&
@requires.empty? &&
@constants.empty?
)
@any_content || (includes && !(@includes + @extends).empty? )
end