Function lightgbm_sys::LGBM_DatasetDumpText

pub unsafe extern "C" fn LGBM_DatasetDumpText(
    handle: DatasetHandle, 
    filename: *const c_char
) -> c_int

\brief Save dataset to text file, intended for debugging use only. \param handle Handle of dataset \param filename The name of the file \return 0 when succeed, -1 when failure happens