---
title: nullableSequenceOfUnionsArg
framework: webkitjs
role: symbol
role_heading: Instance Method
path: webkitjs/testtypedefs/2871199-nullablesequenceofunionsarg
---

# nullableSequenceOfUnionsArg

## Declaration

```data
void nullableSequenceOfUnionsArg(
    sequence <STRING or SEQUENCE_OF_STRINGS> ? sequenceArg
);
```