The detailed category of an event. Contains all possible
states for all event categories.
Values:
DETAILED_CATEGORY_UNSPECIFIED (0):
Unspecified detailed category.
CONFIRMED_INCIDENT (1):
Indicates an event with category INCIDENT has
a confirmed impact to at least one Google Cloud
product.
EMERGING_INCIDENT (2):
Indicates an event with category INCIDENT is
under investigation to determine if it has a
confirmed impact on any Google Cloud products.