Issue Summary

I encountered multiple compilation errors when using the generated Java classes from the schema.json file for Admin API, which was fetched using the method described in Issue #65. These errors require manual intervention to resolve, making the process less efficient and prone to mistakes.

Steps to Reproduce

Fetch the schema.json file as described in Issue #65.
Use the graphql_java_gen Ruby code to generate Java classes from the schema.
Attempt to compile the generated Java code in a Maven project.

Compilation Errors

Here are some examples of the errors encountered during compilation:

Cannot find symbol:

[ERROR] /home/alex/projects/work/codecommit/3w-shopify-client/src/main/java/org/sample/shopify/admin/graphql/SaleEdge.java:[47,54] cannot find symbol
symbol:   method create(com.google.gson.JsonObject)
location: class it.trew.shopify.admin.graphql.UnknownSale

Duplicate case labels:

[ERROR] /home/alex/projects/work/codecommit/3w-shopify-client/src/main/java/org/sample/shopify/admin/graphql/UnknownHasMetafields.java:[135,13] duplicate case label
[ERROR] /home/alex/projects/work/codecommit/3w-shopify-client/src/main/java/org/sample/shopify/admin/graphql/UnknownHasMetafields.java:[143,13] duplicate case label

Method already defined:

[ERROR] /home/alex/projects/work/codecommit/3w-shopify-client/src/main/java/org/sample/shopify/admin/graphql/DisplayableErrorQuery.java:[966,34] method onProductVariantsBulkUpdateUserError(it.trew.shopify.admin.graphql.ProductVariantsBulkUpdateUserErrorQueryDefinition) is already defined in class it.trew.shopify.admin.graphql.DisplayableErrorQuery

Can the Ruby code responsible for generating these classes be updated to resolve these issues?

Specifically:

• Ensure that all required methods are properly generated (e.g., create methods for unknown types).
• Avoid generating duplicate case labels in the switch statements.
• Prevent duplicate method definitions in the same class.

Additional Information

Ruby version: ruby 3.0.2p107
graphql_java_gen version: 0.2.1
Java version: openjdk version 1.8.0_402
Admin GraphQL API version: 2025-01

Let me know if any additional information is needed. Thank you for your help!