Hi, I have this method in AutotestFinder, I don't like it, someone has better code ? AutotestFinder>>allSendersOf: aCompiledMethod "Returns all senders as a collection of CompiledMethod" | methodReferences senders | methodReferences := (SystemNavigation default allSendersOf: aCompiledMethod selector). senders := methodReferences collect: [:aMethodReference | aMethodReference actualClass lookupSelector: aMethodReference selector]. ^ senders select: [:sender| sender isNil not]. "Why senders contains nil sometimes ?" What it does: AutotestFinder new allSendersOf: (ProfStef lookupSelector: #go) answers: an OrderedCollection((ProfStef>>#go "a CompiledMethod(10485760)") (ProtoObject>>#initialize "a CompiledMethod(326631424)") (ProfStef class>>#go "a CompiledMethod(49807360)") (ProfStef class>>#initialize "a CompiledMethod(1060634624)") (ProfStefBrowser class>>#menuCommandOn: "a CompiledMethod(340262912)") (ProfStefTestGo>>#testGoOpenSmalltalkSyntaxTutorial "a CompiledMethod(249823232)")) Cheers, Laurent Laffont http://pharocasts.blogspot.com/ http://magaloma.blogspot.com/