docs: private void checkScalarTypeExtensions(List<GraphQLError> errors, TypeDefinitionRegistry typeRegistry) {
          typeRegistry.scalarTypeExtensions()
                  .forEach((name, extensions) -> {
                      checkTypeExtensionHasCorrespondingType(errors, typeRegistry, name, extensions, ScalarTypeDefinition.class);
                      checkTypeExtensionDirectiveRedefinition(errors, typeRegistry, name, extensions, ScalarTypeDefinition.class);
                  });
  
      }