redef class ToolContext
var extern_classes_typing_phase_ast: Phase = new ExternClassesTypingPhaseAst(self, [ffi_language_assignation_phase, modelize_class_phase])
redef class ToolContext
var extern_classes_typing_phase_ast: Phase = new ExternClassesTypingPhaseAst(self, [ffi_language_assignation_phase, modelize_class_phase])