API Reference > presentation-common > PresentationRules > RuleBase RuleBase Interface Base interface for all Rule implementations. Not meant to be used directly, see Rule. Properties Name Type Description onlyIfNotHandled undefined | boolean Should this rule should be ignored if there is already an existing priority undefined | number Defines the order in which presentation rules will be evaluated and executed. requiredSchemas undefined | RequiredSchemaSpecification[] Schema requirements for this rule. Beta ruleType RuleTypes Used for serializing to JSON. Defined in presentation/common/src/presentation-common/rules/Rule.ts Line 22 Last Updated: 29 November, 2022