mdb_txn_env function
@brief Returns the transaction's #MDB_env
@paramin
txn A transaction handle returned by #mdb_txn_begin()
Implementation
@ffi.FfiNative<ffi.Pointer<MDB_env> Function(ffi.Pointer<MDB_txn>)>(
'mdb_txn_env')
external ffi.Pointer<MDB_env> mdb_txn_env(
ffi.Pointer<MDB_txn> txn,
);