如何使用SPQR获取生成的方案文件.graphqls？

import io.leangen.graphql.GraphQLSchemaGenerator;
import io.leangen.graphql.metadata.strategy.query.AnnotatedResolverBuilder;
import io.leangen.graphql.metadata.strategy.query.PublicResolverBuilder;
import io.leangen.graphql.metadata.strategy.type.DefaultTypeTransformer;
import io.leangen.graphql.metadata.strategy.type.TypeTransformer;
import io.leangen.graphql.metadata.strategy.value.jackson.JacksonValueMapperFactory;
import io.leangen.graphql.util.GraphQLUtils;

import java.io.FileWriter;
import java.io.IOException;

public class SchemaGenerator {

    public static void main(String[] args) throws IOException {
        GraphQLSchemaGenerator generator = new GraphQLSchemaGenerator()
                .withResolverBuilders(
                        new AnnotatedResolverBuilder(),
                        new PublicResolverBuilder("com.example.package")
                )
                .withOperationsFromSingleton(new YourGraphQLQueryResolver())
                .withValueMapperFactory(new JacksonValueMapperFactory())
                .withTypeTransformer(customTypeTransformer());

        String schema = GraphQLUtils.print(generator.generate());
        FileWriter writer = new FileWriter("schema.graphqls");
        writer.write(schema);
        writer.close();
    }

    private static TypeTransformer customTypeTransformer() {
        // Define custom type transformations if needed
        return new DefaultTypeTransformer();
    }
}