Predicate

Add support of filtered generation using a predicate service in Context. Perhaps have a specialized interface instead of java function predicate to avoid accidental clash. Also the predicate interface may have a method for filtering typed elements - structural features and operations. E.g. hide URI's. Perhaps have this interface in the same package with EObjectActionProvider or even as a nested interface. getPredicate() returns a predicate which accepts everything - to avoid null checks all over.
Origin flow/engineering.yml 15:5
Uri engineering://nasdanika/modules/html/modules/flow/issues/predicate
Target Flow
Workable