leveldb_
external fun leveldb_filterpolicy_create(state: <Error class: unknown class>?, destructor: <Error class: unknown class>?, create_filter: LibLevelDB.Companion.FilterPolicyCreateFunction, key_may_match: LibLevelDB.Companion.FilterPolicyKeyMayMatchFunction, name: LibLevelDB.Companion.FilterPolicyNameFunction): LibLevelDB.leveldb_filterpolicy_t
******** Filter policy