presto-example-http/src/main/java/io/prestosql/plugin/example/ExampleSplitManager.java/ExampleSplitManager/ExampleSplitManager
class ExampleSplitManager:    @Inject
    public ExampleSplitManager(ExampleClient exampleClient)
    {
        this.exampleClient = requireNonNull(exampleClient, "client is null");
    }