id, _ := x.(*ast.Ident)
		return id
	case *ast.Ident:
		return fun
	default:
		return nil
	}
}

// funcLitInScope returns a FuncLit that id is at least initially assigned to.
//
// TODO: This is closely tied to id.Obj which is deprecated.
func funcLitInScope(id *ast.Ident) *ast.FuncLit {
	// Compare to (*ast.Object).Pos().
	if id.Obj == nil {
		return nil
	}
	var rhs ast.Expr

func goAsyncCall(info *types.Info, goStmt *ast.GoStmt, toDecl func(*types.Func) *ast.FuncDecl) *asyncCall {
	call := goStmt.Call

	fun := astutil.Unparen(call.Fun)
	if id := funcIdent(fun); id != nil {
		if lit := funcLitInScope(id); lit != nil {
			return &asyncCall{region: lit, async: goStmt, scope: nil, fun: fun}
		}
	}

	if fn := typeutil.StaticCallee(info, call); fn != nil { // static call or method in the package?