Timestream.extend

Timestream.extend(fields)

Return a Timestream containing fields from self and fields.

If a field exists in the base Timestream and the fields, the value

from the fields will be taken.

Parameters:

fields (Timestream | Mapping[str, Arg] | Callable[[Timestream], Timestream | Mapping[str, Arg]])

Fields to add to each record in the Timestream.