When elements of a discriminator does not have a title property the cast fails. The mapping can indeed contain references so we can fallback to use them to retrieve the discriminator schema from ctx.schemas.
A part for variables renaming the main change is this
When elements of a discriminator does not have a
titleproperty the cast fails. Themappingcan indeed contain references so we can fallback to use them to retrieve the discriminator schema fromctx.schemas.A part for variables renaming the main change is this