* confirms the fast fallback implements these invariants:
   *
   *  * if there's no TCP connect in flight, start one.
   *  * don't start a new TCP connect within 250 ms of the previous TCP connect.
   */
  @Test
  fun minimumDelayEnforcedBetweenConnects() {
    val plan0 = routePlanner.addPlan()
    plan0.tcpConnectDelayNanos = 510.ms
    plan0.tcpConnectThrowable = IOException("boom!")

	return !r.isFull && r.w == r.r
}

// CloseWithError closes the writer; reads will return
// no bytes and the error err, or EOF if err is nil.
//
// CloseWithError never overwrites the previous error if it exists
// and always returns nil.
func (r *RingBuffer) CloseWithError(err error) {
	if err == nil {
		err = io.EOF
	}
	r.setErr(err, false)
}

// CloseWriter closes the writer.

  /**
   * Adds a number of occurrences of the specified element to this multiset.
   *
   * @param element the element to add
   * @param occurrences the number of occurrences to add
   * @return the previous count of the element before the operation; possibly zero
   * @throws IllegalArgumentException if {@code occurrences} is negative, or if the resulting amount
   *     would exceed {@link Integer#MAX_VALUE}
   */

) error {
	cmd := iptablesconstants.IPTablesRestore
	log.Infof("Running %s with the following input:\n%v", iptVer.CmdToString(cmd), strings.TrimSpace(data))
	// --noflush to prevent flushing/deleting previous contents from table
	return cfg.ext.Run(cmd, iptVer, strings.NewReader(data), "--noflush", "-v")
}

func (cfg *IptablesConfigurator) addLoopbackRoute() error {
	return cfg.nlDeps.AddLoopbackRoutes(cfg.cfg)
}

//
// A leaf is only scanned once every dataUsageUpdateDirCycles,
// rarer if the bloom filter for the path is clean and no lifecycles are applied.
// Skipped leaves have their totals transferred from the previous cycle.
//
// When selected there is a one in healObjectSelectProb that any object will be chosen for heal scan.
//
// Compaction happens when either:
//

  - [Action Required Before Upgrading](#action-required-before-upgrading)
- [optionally, remove the old secret](#optionally-remove-the-old-secret)
  - [Previous Releases Included in v1.4.0](#previous-releases-included-in-v140)
- [v1.4.0-beta.11](#v140-beta11)
  - [Downloads](#downloads-6)
  - [Changelog since v1.4.0-beta.10](#changelog-since-v140-beta10)
- [v1.4.0-beta.10](#v140-beta10)

     *
     * @param key the key to be placed into this property list.
     * @param value the value corresponding to the key.
     * @return the previous value of the specified key in this property list, or null if it did not have one.
     */
    public Object setProperty(String key, String value) {
        return this.put(key, value);
    }

    @Override

But, sadly, you get nothing useful:

<img src="/img/python-types/image01.png">

### Add types

Let's modify a single line from the previous version.

We will change exactly this fragment, the parameters of the function, from:

```Python
    first_name, last_name
```

to:

```Python
    first_name: str, last_name: str
```

  // Specifies how to treat concurrent executions of a Job.
  // Valid values are:
  //
  // - "Allow" (default): allows CronJobs to run concurrently;
  // - "Forbid": forbids concurrent runs, skipping next run if previous run hasn't finished yet;
  // - "Replace": cancels currently running job and replaces it with a new one
  // +optional
  optional string concurrencyPolicy = 3;

   *
   * @param rowIndex position of the row key in {@link #rowKeyList()}
   * @param columnIndex position of the row key in {@link #columnKeyList()}
   * @param value value to store in the table
   * @return the previous value with the specified row and column
   * @throws IndexOutOfBoundsException if either index is negative, {@code rowIndex} is greater than