driver-core/src/main/com/mongodb/operation/CommandOperationHelper.java
static void executeCommandAsync(final AsyncWriteBinding binding,
                                    final String database,
                                    final BsonDocument command,
                                    final SingleResultCallback<BsonDocument> callback) {
        executeCommandAsync(binding, database, command, new BsonDocumentCodec(), callback);
    }
static void executeCommandAsync(final AsyncWriteBinding binding,
                                    final String database,
                                    final BsonDocument command,
                                    final SingleResultCallback<BsonDocument> callback) {
        executeCommandAsync(binding, database, command, new BsonDocumentCodec(), callback);
    }
/* Async Write Binding Helpers