message: docs: clarify the use of classes and interfaces in style guide
  PR Close
diff: @@ -1904,7 +1904,18 @@ It is rarely worth the effort to change them at the risk of breaking existing co
  -**Consider** using a class instead of an interface.
  +**Consider** using a class instead of an interface for services and declarables (components, directives, and pipes).
  +
  +
  +</div>
  +
  +
  +
  +<div class="s-rule consider">
  +
  +
  +
  +**Consider** using an interface for data models.
  </div>
  