entityType

Declares the entity subclass E as animatable, returning the EntityType element registered under this ProcessModel.

The element's name is E::class.simpleName, which equals the javaClass.simpleName the engine emits in EntityCreated — so it matches the trace by construction (no strings, no drift). Declaration is optional: undeclared types still appear in the trace and can be styled after a run; declaring a type merely makes it available in the inventory before a run.

class Clinic(parent: ModelElement) : ProcessModel(parent, "clinic") {
    val patient = entityType<Patient>()      // surfaces "Patient" to the animation inventory pre-run
    inner class Patient : Entity()
}

Throws