Merge pull request #33392 from moseschrist/master

DocumentArray disciminator() should be able to receive both document and model interface

types/mongoose/index.d.ts

@@ -2423,6 +2423,13 @@ declare module "mongoose" {
          */
         discriminator<U extends Document>(name: string, schema: Schema): Model<U>;
 
+        /**
+         * Adds a discriminator type.
+         * @param name discriminator model name
+         * @param schema discriminator model schema
+         */
+        discriminator<U extends Document, M extends Model<U>>(name: string, schema: Schema): M;
+
       }
 
       /*