Filter operators supported by the component filter engine.
Possible values:
"IsEqualTo""IsNotEqualTo""IsGreaterThan""IsGreaterThanOrEqualTo""IsLessThan""IsLessThanOrEqualTo""Contains""DoesNotContain""StartsWith""DoesNotStartWith""EndsWith""DoesNotEndWith""IsNull""IsNotNull""IsEmpty""IsNotEmpty"