void (String key, @Nullable String value) { if (value == null) { removeSecure(key); return; } try { synchronized (myProxyCredentials) { final Properties props = myProxyCredentials.getValue(); props.setProperty(key, value); myEncryptionSupport.store(props, "Proxy Credentials", PROXY_CREDENTIALS_FILE); } } catch (Exception e) { LOG.info(e); } }