private void createAndSetBootstrap(Bootstrap baseBootstrap, Bootstrap[][] maps,
                                       SessionProtocol desiredProtocol, SslContext sslContext,
                                       boolean webSocket) {
        maps[desiredProtocol.ordinal()][toIndex(webSocket)] = newBootstrap(baseBootstrap, desiredProtocol,
                                                                           sslContext, webSocket, false);
    }
Determine {@link SslContext} by the specified {@link SessionProtocol}.
core/src/main/java/com/linecorp/armeria/client/Bootstraps.java