Groovy
Retrieve the first object (index [0]) among all objects attached to this page and class XWikiComments
com.xpn.xwiki.api.Object@55e66418
Retrieve all objects attached to this page and of class XWikiComments
[com.xpn.xwiki.api.Object@2005a605, com.xpn.xwiki.api.Object@52d6a2af, com.xpn.xwiki.api.Object@952b9a6, com.xpn.xwiki.api.Object@161a4612, com.xpn.xwiki.api.Object@16ee5314, com.xpn.xwiki.api.Object@789051ce, com.xpn.xwiki.api.Object@4aeae938, com.xpn.xwiki.api.Object@47581f5, com.xpn.xwiki.api.Object@3ea6fe1c]
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