pub unsafe extern "C" fn rocksdb_backup_engine_options_set_max_background_operations(
options: *mut rocksdb_backup_engine_options_t,
val: c_int
)pub unsafe extern "C" fn rocksdb_backup_engine_options_set_max_background_operations(
options: *mut rocksdb_backup_engine_options_t,
val: c_int
)