OpenAPI has a way to describe which property can be used as a discriminator on an object type to determine the true type of an object.
This is especially useful when receiving an mixed collection. In OData terms and taking a Microsoft Graph example we can thing of collections of directoryObjects where the values inside the result collection can be users, groups, applications and more.
The current SDKs know how to downcast the results thanks to the OData type property on each entry.
When the conversion library supports that information Kiota deserialization needs to:

• offer a way to register discriminator handlers that would reach the value of the property, and return the target type
• add the discrimination information to the models (static property?) during the generation process
• read the discrimination value, pass it to the handlers
• call the deserialization method of the target type instead
  AB#11197