Groovy
Retrieve the first object (index [0]) among all objects attached to this page and class XWikiComments
com.xpn.xwiki.api.Object@11deaa77
Retrieve all objects attached to this page and of class XWikiComments
[com.xpn.xwiki.api.Object@1cb060f6, com.xpn.xwiki.api.Object@7fadc530, com.xpn.xwiki.api.Object@696d13cc, com.xpn.xwiki.api.Object@782eec26, com.xpn.xwiki.api.Object@5091f06e, com.xpn.xwiki.api.Object@1d3fef15, com.xpn.xwiki.api.Object@50695ab3, com.xpn.xwiki.api.Object@34c1c703, com.xpn.xwiki.api.Object@1df0b104]
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