anchor.diff:  . https://liftweb.net/api/26/api/index.html#net.liftweb.util.SimpleInjector$Inject[`Inject`], an abstract class within the
    `SimpleInjector` trait.
   
  -`FactoryMaker` and `Injector` serve the same purpose, with the former
  +`FactoryMaker` and `Inject` serve the same purpose, with the former
   having more features. The difference is important. Notes on this are
   at the end. I'll continue with `FactoryMaker` for the sake of
   examples, and then note the differences between the two at the end.
  
positive.code: }
  ----
  
  That's pretty much it.
  
  == Overriding dependency factory for tests and mocking dependencies
  
  
negative.code: that can provide DI by composing traits.
  
  Although the cake pattern is helpful, it doesn't provide complete DI functionality.
  The cake pattern allows you to compose complex classes out of Scala traits, but it is less helpful
  in terms of allowing you to make dynamic choices about which combination of cake to vend in a given situation.
  Lift provides extra features that complete the dependency injection puzzle.
  
  == Why Lift Dependency Injection
  
  Many people come to Scala from a Java background, so it is only natural to want to use Guice/Spring,
  which do a great job in the java world. And we can https://groups.google.com/forum/#!topic/liftweb/_lleL2xpCFU[use those],
  but there's a better, more direct way that is less magical.
  
  Lift's philosophy is to keep things as simple as possible (and no simpler), and allow full control
  to the developers over how things work. To paraphrase David Pollak,
  "The abstraction turtles have to end somewhere" and  Lift's Dependency Injection features end those turtles quite
  early.
  
  == Lift's dependency injection and various dependency scopes (e.g. from Spring)
  
  Lift's dependency injection allows all the
  https://docs.spring.io/spring/docs/current/spring-framework-reference/html/beans.html#beans-factory-scopes[four most commonly used scopes] that
  are possible with spring:
  https://docs.spring.io/spring/docs/current/spring-framework-reference/html/beans.html#beans-factory-scopes-singleton[singleton],
  