+ super AConcreteMethPropdef
+end
+class AExternCalls
+ super Prod
+ readable var _n_kwimport: TKwimport
+ readable var _n_extern_calls: List[AExternCall] = new List[AExternCall]
+end
+abstract class AExternCall
+ super Prod
+end
+abstract class APropExternCall
+super AExternCall
+end
+class ALocalPropExternCall
+super APropExternCall
+ readable var _n_methid: AMethid
+end
+class AFullPropExternCall
+super APropExternCall
+ readable var _n_classid: TClassid
+ readable var _n_quad: nullable TQuad = null
+ readable var _n_methid: AMethid
+end
+class AInitPropExternCall
+super APropExternCall
+ readable var _n_classid: TClassid
+end
+class ASuperExternCall
+super AExternCall
+ readable var _n_kwsuper: TKwsuper
+end
+abstract class ACastExternCall
+super AExternCall
+end
+class ACastAsExternCall
+super ACastExternCall
+ readable var _n_from_type: AType
+ readable var _n_kwas: TKwas
+ readable var _n_to_type: AType
+end
+class AAsNullableExternCall
+super ACastExternCall
+ readable var _n_type: AType
+ readable var _n_kwas: TKwas
+ readable var _n_kwnullable: TKwnullable
+end
+class AAsNotNullableExternCall
+super ACastExternCall
+ readable var _n_type: AType
+ readable var _n_kwas: TKwas
+ readable var _n_kwnot: TKwnot
+ readable var _n_kwnullable: TKwnullable