Function lightgbm_sys::LGBM_BoosterMerge

pub unsafe extern "C" fn LGBM_BoosterMerge(
    handle: BoosterHandle, 
    other_handle: BoosterHandle
) -> c_int

\brief Merge model from other_handle into handle. \param handle Handle of booster, will merge another booster into this one \param other_handle Other handle of booster \return 0 when succeed, -1 when failure happens