errors

var ErrKeyInvalid = errors.New("key invalid")

var ErrKeyNotFound = errors.New("key not found")

var ErrNotImplemented = errors.New("not implemented")

var ErrNotReadable = errors.New("not readable")

var ErrNotWritable = errors.New("not writable")

var ErrUnsupportedDataType = errors.New("unsupported data type")