@Schema and description not picked up for polymorphic attributes. Fixes #2620

Author: bnasslahsen

springdoc-openapi-starter-webmvc-api/src/test/java/test/org/springdoc/api/v30/app185/Pet.java

@@ -26,12 +26,14 @@
 
 import com.fasterxml.jackson.annotation.JsonSubTypes;
 import com.fasterxml.jackson.annotation.JsonTypeInfo;
+import io.swagger.v3.oas.annotations.media.Schema;
 
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, property = "type")
 @JsonSubTypes({
 		@JsonSubTypes.Type(Dog.class),
 		@JsonSubTypes.Type(Cat.class)
 })
+@Schema(description = "This is a Pet")
 public class Pet {
 
 	public final String name;

springdoc-openapi-starter-webmvc-api/src/test/resources/results/3.0.1/app185.json

@@ -109,6 +109,7 @@
             "type": "string"
           }
         },
+        "description": "This is a Pet",
         "discriminator": {
           "propertyName": "type"
         }