Options for handling timeCreated metadata for Google Cloud
Storage objects.
Values:
TIME_CREATED_UNSPECIFIED (0):
TimeCreated behavior is unspecified.
TIME_CREATED_SKIP (1):
Do not preserve the timeCreated metadata from the source
object.
TIME_CREATED_PRESERVE_AS_CUSTOM_TIME (2):
Preserves the source object's timeCreated metadata in
the customTime field in the destination object. Note
that any value stored in the source object's customTime
field will not be propagated to the destination object.