Groovy
Retrieve the first object (index [0]) among all objects attached to this page and class XWikiComments
com.xpn.xwiki.api.Object@5184bce9
Retrieve all objects attached to this page and of class XWikiComments
[com.xpn.xwiki.api.Object@5c9eac12, com.xpn.xwiki.api.Object@3533013f, com.xpn.xwiki.api.Object@2796ea62, com.xpn.xwiki.api.Object@24f5dc3c, com.xpn.xwiki.api.Object@94dfa19, com.xpn.xwiki.api.Object@5e5e8414, com.xpn.xwiki.api.Object@f316d73, com.xpn.xwiki.api.Object@7608a0cf, com.xpn.xwiki.api.Object@3075b293]
Retrieve all objects attached to this page and of class XWikiComments and one of their properties
objsAuthors = doc.getObjects('XWiki.XWikiComments').author
objsAuthor = doc.getObjects('XWiki.XWikiComments')[2].author
println objs[0].author
println objsAuthors
println objsAuthor