Fun with abstracts: grouping members without overhead.

Animals.hx

package ;

abstract Animals(ExampleData) from ExampleData {
  public var dog(get, never):Animal;
  inline function get_dog():Animal return this.dog;
  
  public var cat(get, never):Animal;
  inline function get_cat():Animal return this.cat;
  
  public var cow(get, never):Animal;
  inline function get_cow():Animal return this.cow;
}

Example

package ;

abstract Example(ExampleData) {
  public var animals(get, never):Animals;
  public var fruit(get, never):Fruit;
  inline function get_animals():Animals return this;
  inline function get_fruit():Fruits return this;
}

ExampleData.hx

package ;

class ExampleData {
  public var dog:Animal;
  public var cat:Animal;
  public var cow:Animal;
  
  public var orange:Fruit;
  public var banana:Fruit;
  public var apple:Fruit;
}

Fruits.hx

package ;

abstract Fruits(ExampleData) from ExampleData {
  public var orange(get, never):Fruit;
  inline function get_orange():Fruit return this.orange;
  
  public var banana(get, never):Fruit;
  inline function get_banana():Fruit return this.banana;
  
  public var apple(get, never):Fruit;
  inline function get_apple():Fruit return this.apple;
}