service

var (
	ErrInvalidObjective = errors.New("invalid objective")
	ErrInvalidVerb      = errors.New("invalid verb")
	ErrNotImplemented   = errors.New("not implemented")
	ErrGetVertex        = errors.New("get vertex error")
	ErrGetEdge          = errors.New("get edge error")
	ErrPutVertex        = errors.New("put vertex error")
	ErrPutEdge          = errors.New("put edge error")
	ErrDeleteVertex     = errors.New("delete vertex error")
	ErrDeleteEdge       = errors.New("delete edge error")
	ErrAddEdge          = errors.New("add edge error")
	ErrIlluminate       = errors.New("illuminate error")
	ErrConnection       = errors.New("connection error")
)