Allow global default values for all optional url child tags (lastmod,
changefreq, priority). So, you could leave any optional tag out of the
collection argument at initialization, but instead optionally pass a value
that will be used for the respective tag for every url item in the sitemap.
This should be accomplished by adding three more optional init arguments:
lastmodDefault, changefreqDefault and priorityDefault.
For example, the following code would produce a sitemap.xml with two url
tag groups, each with a different loc value of course, but with the same
lastmod value for each url...
urlList = 'http://site.com/,http://site.com/page2.html';
lastmodDefault = now();
sitemap.createObject('component', 'Sitemap').init( collection=urlList,
lastmodDefault=lastmodDefault );