public ArmeriaRetrofitBuilder streaming(boolean streaming) {
        this.streaming = streaming;
        return this;
    }
Sets the streaming flag to make Armeria client fully support {@link Streaming}.
If this flag is {@code false}, Armeria client will buffer all data and call a callback after receiving
the data completely, even if a service method was annotated with {@link Streaming}.
By enabling this flag, Armeria client will use the {@link Executor} specified with
{@link ArmeriaRetrofitBuilder#callbackExecutor(Executor)} to read the data in a blocking way.

<p>Note: It is not recommended to have the service methods both with and without the
{@link Streaming} annotation in the same interface. Consider separating them into different
interfaces and using different builder to build the service.</p>

@see Streaming
retrofit2/src/main/java/com/linecorp/armeria/client/retrofit2/ArmeriaRetrofitBuilder.java