Values:
QUOTA_SAFETY_CHECK_UNSPECIFIED (0):
Unspecified quota safety check.
QUOTA_DECREASE_BELOW_USAGE (1):
Validates that a quota mutation would not
cause the consumer's effective limit to be lower
than the consumer's quota usage.
QUOTA_DECREASE_PERCENTAGE_TOO_HIGH (2):
Validates that a quota mutation would not
cause the consumer's effective limit to decrease
by more than 10 percent.
