Values:
STATUS_CLASS_UNSPECIFIED (0):
Default value that matches no status codes.
STATUS_CLASS_1XX (100):
The class of status codes between 100 and
199.
STATUS_CLASS_2XX (200):
The class of status codes between 200 and
299.
STATUS_CLASS_3XX (300):
The class of status codes between 300 and
399.
STATUS_CLASS_4XX (400):
The class of status codes between 400 and
499.
STATUS_CLASS_5XX (500):
The class of status codes between 500 and
599.
STATUS_CLASS_ANY (1000):
The class of all status codes.
