Groovy
Retrieve the first object (index [0]) among all objects attached to this page and class XWikiComments
com.xpn.xwiki.api.Object@66c16797
Retrieve all objects attached to this page and of class XWikiComments
[com.xpn.xwiki.api.Object@6261233d, com.xpn.xwiki.api.Object@5750ac40, com.xpn.xwiki.api.Object@715cca88, com.xpn.xwiki.api.Object@2f4e0dd, com.xpn.xwiki.api.Object@1ad6ceaf, com.xpn.xwiki.api.Object@c9b50ed, com.xpn.xwiki.api.Object@28ddfe12, com.xpn.xwiki.api.Object@65364b4, com.xpn.xwiki.api.Object@4cf868aa]
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