Defines the stitcher behavior in case an ad does not align exactly
with the ad break boundaries. If not specified, the default is
COMPLETE_AD.
Values:
STITCHING_POLICY_UNSPECIFIED (0):
Stitching policy is not specified.
COMPLETE_AD (1):
Finishes stitching the current ad before
returning to content.
CUT_CURRENT (3):
Cuts an ad short and returns to content in
the middle of the ad.
