docs: public static SSLSocketFactory createSocketFactory(Collection<KeyStore> extraStores) throws KeyStoreException, KeyManagementException {
  		final Collection<X509TrustManager> managers = new ArrayList<>();
  		for (KeyStore ks : extraStores) {
  			addX509Managers(managers, ks); 
  		}
  		/* Add default manager. */
  		addX509Managers(managers, null);
  		final TrustManager tm = new CompositeTrustManager(managers);
  		
  		try {
  			final SSLContext ctx = SSLContext.getInstance("SSL");
  			ctx.init(null, new TrustManager[] {tm}, null);
  			return new SSLSocketFactory(ctx);
  		} catch (NoSuchAlgorithmException e) {
  			throw new Error("No SSL protocols supported :(", e);
  		}
  	}