aClass := Object subclass: #A category: 'Temporary'.
Smalltalk removeClassNamed: #A.

[FLSerializer
	serialize: { aClass. Integer }
	toFileNamed: 'example.fuel' ]
	on: FLObsolete 
	do: [ :anError | anError resumeUnchecked: nil ].

Object subclass: #A category: 'Temporary'.

FLMaterializer materializeFromFileNamed: 'example.fuel'