How to use your customized meta schema?

The library supports customized meta schema with this builder method. We have provided default instances for v4, v6, v7, and v2019-09 but users can always create their own JsonMetaSchema instance with customized meta schema.

https://github.com/networknt/json-schema-validator/blob/master/src/main/java/com/networknt/schema/JsonMetaSchema.java#L188