public static MinimalHttpAsyncClient createMinimal(
            final H2Config h2Config,
            final Http1Config h1Config,
            final IOReactorConfig ioReactorConfig) {
        return createMinimal(h2Config, h1Config, ioReactorConfig,
                PoolingAsyncClientConnectionManagerBuilder.create().build());
    }
Creates {@link MinimalHttpAsyncClient} instance optimized for
HTTP/1.1 and HTTP/2 message transport without advanced HTTP protocol
functionality.
httpclient5/src/main/java/org/apache/hc/client5/http/impl/async/HttpAsyncClients.java