Groovy
Retrieve the first object (index [0]) among all objects attached to this page and class XWikiComments
com.xpn.xwiki.api.Object@1809edb7
Retrieve all objects attached to this page and of class XWikiComments
[com.xpn.xwiki.api.Object@4cc9d88b, com.xpn.xwiki.api.Object@57a7b50f, com.xpn.xwiki.api.Object@436018be, com.xpn.xwiki.api.Object@59f88480, com.xpn.xwiki.api.Object@4ac31da5, com.xpn.xwiki.api.Object@4fcf61fb, com.xpn.xwiki.api.Object@3829ceac, com.xpn.xwiki.api.Object@40bf9b02, com.xpn.xwiki.api.Object@6359c183]
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