System.Text.Json Source Generators

The JSON serialization can be optimized using source generators.
I understand that I have to write a context for the given class I wish to serialize.
And I'd specify the given context when serializing the class instance.

What I do not understand is how I would pass the context for other classes within the serialized class?

E.g.

public record Position(double X, double Y);
public record Size(int Width, int Height);

public class CanvasSettings
{
  public Position ViewportLocation { get; set; }
  public Size ViewportSize { get; set; }
  .....
}

[JsonSerializable(typeof(CanvasSettings))]
public partial sealed CanvasSettingsContext
  : JsonSerializerContext
{
}

public record Position(double X, double Y);
public record Size(int Width, int Height);

public class CanvasSettings
{
  public Position ViewportLocation { get; set; }
  public Size ViewportSize { get; set; }
  .....
}

[JsonSerializable(typeof(CanvasSettings))]
public partial sealed CanvasSettingsContext
  : JsonSerializerContext
{
}

public record Position(double X, double Y);
public record Size(int Width, int Height);

public class CanvasSettings
{
  public Position ViewportLocation { get; set; }
  public Size ViewportSize { get; set; }
  .....
}

[JsonSerializable(typeof(CanvasSettings))]
public partial sealed CanvasSettingsContext
  : JsonSerializerContext
{
}

public record Position(double X, double Y);
public record Size(int Width, int Height);

public class CanvasSettings
{
  public Position ViewportLocation { get; set; }
  public Size ViewportSize { get; set; }
  .....
}

[JsonSerializable(typeof(CanvasSettings))]
public partial sealed CanvasSettingsContext
  : JsonSerializerContext
{
}

Is the context of the

CanvasSettings

CanvasSettings

CanvasSettings

CanvasSettings including data for the its property members?

How can I utilize source generators when working with polymorphic types?
E.g.,

IAnimal

IAnimal

IAnimal

IAnimal,

Dog : IAnimal

Dog : IAnimal

Dog : IAnimal

Dog : IAnimal,

Cat : IAnimal

Cat : IAnimal

Cat : IAnimal

Cat : IAnimal.

[JsonPolymorphic, JsonDerived(typeof(Dog), nameof(Dog)), JsonDerived(typeof(Cat), nameof(Cat))]
public interface IAnimal {}

[JsonPolymorphic, JsonDerived(typeof(Dog), nameof(Dog)), JsonDerived(typeof(Cat), nameof(Cat))]
public interface IAnimal {}

[JsonPolymorphic, JsonDerived(typeof(Dog), nameof(Dog)), JsonDerived(typeof(Cat), nameof(Cat))]
public interface IAnimal {}

[JsonPolymorphic, JsonDerived(typeof(Dog), nameof(Dog)), JsonDerived(typeof(Cat), nameof(Cat))]
public interface IAnimal {}

Do I write a context for the interface? How would the context cover all the members of the derived classes?

System.Text.Json Source Generators

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