Enhance Activity schema to include client's timezone

[will-molloy]

Is your feature request related to a problem? Please describe.

• We have users in different timezones, so it would be useful to retrieve the client's timezone from the activity schema.

Describe the solution you'd like

• For activity schema to include a LocalDateTime or TimeZone property.

Describe alternatives you've considered

• I tried deriving the timezone from the localTimestamp field, however, since it is a DateTime object is does not include timezone information.
• Suggest:
  • Changing localTimestamp field to LocalDateTime type
  • OR include a TimeZone type in the Activity schema

Additional context

• The JSON payload localTimestamp field does include the timezone, but when deserialised into Java it is lost, so it stores the same value as timestamp:

JSON payload field (in bot emulator):

Java field (in IntelliJ debugger):

[enhancement]

[will-molloy]

Looks like DateTime does encode TimeZone, LocalDateTime does not (my bad). Need to call DateTime#getZone() method.

But still, my local time zone of UTC+12 is converted to UTC when deserialised into Java ?