Groovy
Retrieve the first object (index [0]) among all objects attached to this page and class XWikiComments
com.xpn.xwiki.api.Object@494d03a2
Retrieve all objects attached to this page and of class XWikiComments
[com.xpn.xwiki.api.Object@28ddaf98, com.xpn.xwiki.api.Object@7233391d, com.xpn.xwiki.api.Object@ead97e, com.xpn.xwiki.api.Object@3a6cdfaa, com.xpn.xwiki.api.Object@41d02fdd, com.xpn.xwiki.api.Object@4af677ec, com.xpn.xwiki.api.Object@7b3b4d66, com.xpn.xwiki.api.Object@7256a2be, com.xpn.xwiki.api.Object@15d6a297]
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