ecode

var (
	ErrNullPointer         = errors.New("Null reference instance")
	ErrNoCommand           = errors.New("No command")
	ErrInvalidAPIParameter = errors.New("Invalid API parameters")
	ErrInvalidAPIResponse  = errors.New("Invalid response data from API")
	ErrNoData              = errors.New("No response data")
	ErrUnMatchServiceType  = errors.New("Unmatch service type")
)