Operator type
Defines values for Operator.
KnownOperator can be used interchangeably with Operator,
this enum contains the known values that the service supports.
Known values supported by the service
In: The value of the key should be in the given list.
NotIn: The value of the key should not be in the given list.
Exists: The value of the key should exist.
DoesNotExist: The value of the key should not exist.
type Operator = string