Function lightgbm_sys::LGBM_BoosterGetFeatureNames

pub unsafe extern "C" fn LGBM_BoosterGetFeatureNames(
    handle: BoosterHandle, 
    len: c_int, 
    out_len: *mut c_int, 
    buffer_len: size_t, 
    out_buffer_len: *mut size_t, 
    out_strs: *mut *mut c_char
) -> c_int

\brief Get names of features. \param handle Handle of booster \param len Number of char* pointers stored at out_strs. If smaller than the max size, only this many strings are copied \param[out] out_len Total number of features \param buffer_len Size of pre-allocated strings. Content is copied up to buffer_len - 1 and null-terminated \param[out] out_buffer_len String sizes required to do the full string copies \param[out] out_strs Names of features, should pre-allocate memory \return 0 when succeed, -1 when failure happens