Groovy
Retrieve the first object (index [0]) among all objects attached to this page and class XWikiComments
com.xpn.xwiki.api.Object@35584b1c
Retrieve all objects attached to this page and of class XWikiComments
[com.xpn.xwiki.api.Object@329ca89d, com.xpn.xwiki.api.Object@4b01f560, com.xpn.xwiki.api.Object@6d949818, com.xpn.xwiki.api.Object@368d87dc, com.xpn.xwiki.api.Object@5d2987f, com.xpn.xwiki.api.Object@4519bcd5, com.xpn.xwiki.api.Object@1cbc6764, com.xpn.xwiki.api.Object@1527e4f9, com.xpn.xwiki.api.Object@6e29a248]
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