lastModifiedSince property
If specified, only objects with a "last modification time" on or after this timestamp and objects that don't have a "last modification time" are transferred.
The last_modified_since and last_modified_before fields can be used
together for chunked data processing. For example, consider a script that
processes each day's worth of data at a time. For that you'd set each of
the fields as follows: * last_modified_since to the start of the day *
last_modified_before to the end of the day
Implementation
core.String? lastModifiedSince;