sdk/sdk.go
func caller() string {
	name := "unknown"
	if pc, _, _, ok := runtime.Caller(1); ok {
		name = filepath.Base(runtime.FuncForPC(pc).Name())
	}
	return name
}
func caller() string {
	name := "unknown"
	if pc, _, _, ok := runtime.Caller(1); ok {
		name = filepath.Base(runtime.FuncForPC(pc).Name())
	}
	return name
}
// caller returns the name of the function that called the function this function was called from.