Groovy
Retrieve the first object (index [0]) among all objects attached to this page and class XWikiComments
com.xpn.xwiki.api.Object@3243f5f
Retrieve all objects attached to this page and of class XWikiComments
[com.xpn.xwiki.api.Object@5af21efa, com.xpn.xwiki.api.Object@4dcfddbb, com.xpn.xwiki.api.Object@9e647e6, com.xpn.xwiki.api.Object@6d7a521d, com.xpn.xwiki.api.Object@79a52611, com.xpn.xwiki.api.Object@4966647b, com.xpn.xwiki.api.Object@614eece2, com.xpn.xwiki.api.Object@4a21b57, com.xpn.xwiki.api.Object@2eb0ef21]
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