Groovy
Retrieve the first object (index [0]) among all objects attached to this page and class XWikiComments
com.xpn.xwiki.api.Object@334ea9ec
Retrieve all objects attached to this page and of class XWikiComments
[com.xpn.xwiki.api.Object@3df64010, com.xpn.xwiki.api.Object@71e7fa37, com.xpn.xwiki.api.Object@34dc6b4d, com.xpn.xwiki.api.Object@7308a757, com.xpn.xwiki.api.Object@3d227bc1, com.xpn.xwiki.api.Object@22eadb42, com.xpn.xwiki.api.Object@68e0dbf6, com.xpn.xwiki.api.Object@2892945, com.xpn.xwiki.api.Object@7af4724f]
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