default value for Object schema is not converted correctly

swagger-parser-v3 version: 2.0.17

When parsing openapi document which has a default value for an object schema, has the default value set as an object of type com.fasterxml.jackson.databind.node.ObjectNode. The value should have been of type Schema. Please use a sample schema and check the value of _default or getDefault for the schema.

   defaultSchema:
      type: object
      properties:
        id: 
          type: integer
          default: 100
        name:
          type: string
          default: Ashii
      default:
        id: 100
        name: Ash

Thanks,
Aishvarya

Start by reproducing the issue with swagger-parser-v3 2.0.17 and the sample OpenAPI object schema. Inspect the schema's _default or getDefault value after parsing; done means the object default is represented as a Schema rather than a Jackson ObjectNode.