Groovy
Retrieve the first object (index [0]) among all objects attached to this page and class XWikiComments
com.xpn.xwiki.api.Object@55899c48
Retrieve all objects attached to this page and of class XWikiComments
[com.xpn.xwiki.api.Object@18ad27c4, com.xpn.xwiki.api.Object@100dc184, com.xpn.xwiki.api.Object@771bc957, com.xpn.xwiki.api.Object@413fabd8, com.xpn.xwiki.api.Object@3b2b135f, com.xpn.xwiki.api.Object@904e052, com.xpn.xwiki.api.Object@1f232c1e, com.xpn.xwiki.api.Object@3e25758a, com.xpn.xwiki.api.Object@d47d6e6]
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