% This is generated by ESQL's AbstractFunctionTestCase. Do not edit it. See ../README.md for how to regenerate it.

**Parameters**

`start_time_or_offset`
:    Offset from NOW for the single parameter mode. Start time for two parameter mode.  In two parameter mode, the start time value can be a date string, date, date_nanos or epoch milliseconds. 

`end_time`
:   Explicit end time that can be a date string, date, date_nanos or epoch milliseconds.