[Documentation Request] Document `c.e.c.elasticsearch._types.Time.Builder` methods `offset(int)` and `time(String)`

[cyrille-leclerc]

Description

The Jenkins OpenTelemetry Plugin is using the Elasticsearch Point in Time API which requires to specify a TTL of the Point in Time using the c.e.c.elasticsearch._types.Time data structure (see code here):

Time POINT_IN_TIME_KEEP_ALIVE = Time.of(builder -> builder.time("30s"));

As we use a TTL of 30 seconds, we expected to use the Time.Builder#offset() API with an API that could look like Time.Builder#offset(int offset, TimeUnit offsetUnit). However, it's not possible as the Time.Builder#offset() API only takes one single integer parameter Time.Builder#offset(Integer offset).

Instead, we used the Time.Builder#offset(String v) methods which was not intuitive to us and that was not easy to understand as we didn't understand what was the expected format of the String parameter.