Element used to describe an Atom date and time in the ISO 8601 format
Examples:
2013-03-04T15:30:02Z
2013-03-04T10:30:02-05:00
Raises NotAvailableValueError if element content is nil
# File rss/atom.rb, line 239 def atom_validate(ignore_unknown_element, tags, uri) raise NotAvailableValueError.new(tag_name, "") if content.nil? end