Method error

API/fleece/Fleece.hh:679–679

    inline alloc_slice Encoder::finish(FLError* err) {return FLEncoder_Finish(_enc, err);}
    inline void Encoder::reset()                {return FLEncoder_Reset(_enc);}
    inline FLError Encoder::error() const       {return FLEncoder_GetError(_enc);}
    inline const char* Encoder::errorMessage() const {return FLEncoder_GetErrorMessage(_enc);}

    // specialization for assigning bool value since there is no Encoder<<bool