// This is generated by ESQL's AbstractFunctionTestCase. Do no edit it. See ../README.md for how to regenerate it.

*Parameters*

`dateFormat`::
Date format (optional).  If no format is specified, the `yyyy-MM-dd'T'HH:mm:ss.SSSZ` format is used. If `null`, the function returns `null`.

`date`::
Date expression. If `null`, the function returns `null`.
