What's the point of safe vs unsafe ApplyActions? AFAIK, you an unsafe action has no access to any mutable state (the project) and is side-effect free. But when registering a task via the safe

TaskRegistrar

, you can easily get the attached project instance in a safe ApplyAction:

var project: Project? = null
taskRegistrar.register("hack") {
  project = this.project
}.get()
project!!

Will this hack be "supported" due to

Task.getProject

or do you plan to introduce a safe Task super interface (maybe without antBuilder and property method too)?