Pharo12 bug: Instance of SystemAnnouncer did not understand #methodChangedFrom:to:oldProtocol:

[labordep]

Problem from:
Instance of SystemAnnouncer did not understand #methodChangedFrom:to:oldProtocol:
SystemAnnouncer(Object)>>doesNotUnderstand: #methodChangedFrom:to:oldProtocol:
MolComponentFactory class>>compileContractSelector:protocol:interfaces:type:

Impacted tests:

MolComponentFactoryTest
✗ #testComponentContractChanged (73ms)
✗ #testComponentSubclassesTraitsUses (615ms)
✗ #testComponentSubclassesTraitsUses2 (552ms)
✗ #testCreateComponentCompleteContract (559ms)
✗ #testCreateComponentCompleteContractWithoutAPI (557ms)
✗ #testMakeAComponentAndAddATraitWithCompleteContract (641ms)
✗ #testMakeAComponentAndAddATraitWithCompleteContractAlternative2 (656ms)
✗ #testMakeAComponentFromScratch (646ms)
✗ #testMakeAComponentFromScratchAlternative2 (541ms)
✗ #testMakeAComponentFromScratchAlternative3 (604ms)
✗ #testMakeAComponentFromScratchAlternative4 (598ms)

[labordep]

Cyril propose to use that :

SystemAnnouncer uniqueInstance announce: (MethodModified methodChangedFrom: previousMethodOrNil to: newMethod oldProtocol: aProtocol)