// Write the timestamp value to the given buffer in the form 2004-05-01T13:20:00+00:00
// returns 0 if the buffer is smaller than DateTimeLen
const char* EncodeString(char* str_buf, ui32_t buf_len) const;
// Write the timestamp value to the given buffer in the form 2004-05-01T13:20:00+00:00
// returns 0 if the buffer is smaller than DateTimeLen
const char* EncodeString(char* str_buf, ui32_t buf_len) const;