pub unsafe extern "C" fn rocksdb_column_family_descriptors_options(
cf_descs: *const rocksdb_column_family_descriptors_t,
index: c_int
) -> *mut rocksdb_options_t
pub unsafe extern "C" fn rocksdb_column_family_descriptors_options(
cf_descs: *const rocksdb_column_family_descriptors_t,
index: c_int
) -> *mut rocksdb_options_t