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-# Polymorphic Objects 
-
-## What 
-
-- Resources in your API are polymorphic. They can be returned as XML or JSON and can have a flexible amount of fields. You can also have requests and responses in your API design that can be depicted by a number of alternative schemas. 
-- **Polymorphism** is the capacity to present the same interface for differing underlying forms. 
-- The **discriminator** keyword is used to designate the name of the property that decides which schema definition validates the structure of the model. 
-
-## Why 
-- Polymorphism permits combining and extending model definitions. 
-
-## Best Practices
-
-<!-- theme: warning -->
->The discriminator property **must** be a mandatory or required field. When it is used, the value **must** be the name of the schema or any schema that inherits it. 
-
-### Example 
-
-```
-{
-  definitions:
-  Vehicle:
-    type: object, 
-    discriminator: brand
-    properties:
-      model:
-        type: string
-      color:
-        type: string
-      required:
-    model
-    
-  Sedan: # Sedan is used as the discriminator value 
-  
-    allOf:
-      $ref: '#/definitions/Vehicle'
-      type: object
-        properties:
-          dateManufactured: 
-            type: date
-          required: 
-            dateManufactured
-}
-```