*       listeners can harm responsiveness, slow the system as a whole, or worse. (See also the
   *       note about locking below.)
   *   <li>If many tasks will be triggered by the same event, one heavyweight task may delay other
   *       tasks -- even tasks that are not themselves {@code directExecutor} tasks.
   *   <li>If many such tasks are chained together (such as with {@code

        .containsExactly(0, 1, 3, 6, 10, 15, 21)
        .inOrder();
  }

  public void testCopyOf_array_empty() {
    /*
     * We don't guarantee the same-as property, so we aren't obligated to test it. However, it's
     * useful in testing - when two things are the same then one can't have bugs the other doesn't.
     */
    assertThat(ImmutableIntArray.copyOf(new int[0])).isSameInstanceAs(ImmutableIntArray.of());
  }

            "contents were not equal and in the same order: "
                + "expected = "
                + expected
                + ", actual = "
                + actual);
      }
    }

    if (expectedIter.hasNext() || actualIter.hasNext()) {
      // actual either had too few or too many elements
      fail(
          "contents were not equal and in the same order: "
              + "expected = "

        .inOrder();
  }

  public void testCopyOf_array_empty() {
    /*
     * We don't guarantee the same-as property, so we aren't obligated to test it. However, it's
     * useful in testing - when two things are the same then one can't have bugs the other doesn't.
     */
    assertThat(ImmutableDoubleArray.copyOf(new double[0]))
        .isSameInstanceAs(ImmutableDoubleArray.of());

// Available returns how many bytes are unused in the buffer.
func (b *Buffer) Available() int { return cap(b.buf) - len(b.buf) }

// Truncate discards all but the first n unread bytes from the buffer
// but continues to use the same allocated storage.
// It panics if n is negative or greater than the length of the buffer.
func (b *Buffer) Truncate(n int) {
	if n == 0 {
		b.Reset()
		return
	}
	b.lastRead = opInvalid
	if n < 0 || n > b.Len() {

  private @Nullable K unusedKeyForSerialization;
  private @Nullable V unusedValueForSerialization;

  private final transient SortedMap<K, V> sortedDelegate;

  // The comparator used by this map.  It's the same as that of sortedDelegate,
  // except that when sortedDelegate's comparator is null, it points to a
  // non-null instance of Ordering.natural().
  // (cpovirk: Is sortedDelegate's comparator really ever null?)

You can also create an environment variable only for a **specific program invocation**, that is only available to that program, and only for its duration.

To do that, create it right before the program itself, on the same line:

<div class="termy">

```console
// Create an env var MY_NAME in line for this program call
$ MY_NAME="Wade Wilson" python main.py

// Now it can read the environment variable

        return facadeSelectList(createCB(cbLambda));
    }

    public PagingResultBean<BoostDocumentRule> selectPage(CBCall<BoostDocumentRuleCB> cbLambda) {
        // #pending same?
        return (PagingResultBean<BoostDocumentRule>) facadeSelectList(createCB(cbLambda));
    }

    public void selectCursor(CBCall<BoostDocumentRuleCB> cbLambda, EntityRowHandler<BoostDocumentRule> entityLambda) {

        return facadeSelectList(createCB(cbLambda));
    }

    public PagingResultBean<RelatedContent> selectPage(CBCall<RelatedContentCB> cbLambda) {
        // #pending same?
        return (PagingResultBean<RelatedContent>) facadeSelectList(createCB(cbLambda));
    }

    public void selectCursor(CBCall<RelatedContentCB> cbLambda, EntityRowHandler<RelatedContent> entityLambda) {

## List of models

The same way, you can declare responses of lists of objects.

For that, use the standard Python `typing.List` (or just `list` in Python 3.9 and above):

//// tab | Python 3.9+

```Python hl_lines="18"