Function librocksdbsys::crocksdb_get_all_key_versions

pub unsafe extern "C" fn crocksdb_get_all_key_versions(
    db: *mut DBInstance, 
    begin_key: *const u8, 
    begin_keylen: size_t, 
    end_key: *const u8, 
    end_keylen: size_t, 
    errptr: *mut *mut c_char
) -> *mut DBKeyVersions