[Pharo-users] how to find 'knownName'?

Hallo, Trying to implement the Laser-Game to Pharo I am at the moment stuck at [code]findLaserPathCounter ^ self allMorphs detect: [:t1 | t1 knownName = 'laserPath'] ifNone: [] [/code] It works in Squeak (1.4) My question is: How do I find the definition of knownName in Squeak ( to fileout and transfer to Pharo)??? It seems to be a method for Morphs but I think I need to know how to question Smalltalk to find a definition of a method with the help of a 'Systembrowser' ? Greets Peter