这是我的Go代码。也可在GoPlayground获得packagemainimport"fmt"typeAppstruct{OneHandler*OneHandlerTwoHandler*TwoHandler}typeOneHandlerstruct{}typeTwoHandlerstruct{NestedTwoHandler*NestedTwoHandler}typeNestedTwoHandlerstruct{NestedNestedTwoHandler*NestedNestedTwoHandler}typeNestedNestedTwoHandlerstruct{}funcmai
