}
            }
        }

        return value;
    }

    private static boolean isTypeCompatible(Class<?> type, Object value) {
        if (type.isInstance(value)) {
            return true;
        }
        // likely Boolean -> boolean, Short -> int etc. conversions, it's not the problem case we try to avoid

        when {
          isOptional && value == optionalValue -> {
            // Write nothing.
          }

          else -> {
            for ((type, adapter) in choices) {
              if (type.isInstance(value) || (value == null && type == Unit::class)) {
                (adapter as DerAdapter<Any?>).toDer(writer, value)
                return
              }
            }
          }
        }
      }

            assertEquals(1, ((Collection) result.getProblems()).size());
            result.getProblems().forEach(p -> {
                assertTrue(expectedException.isInstance(p.getException()));
                assertTrue(p.getException().getMessage().contains(partOfMessage));
            });
        }
    }

    @Test

    }

    @Override
    public final void run() {
      try {
        realRun();
        threadShouldThrow(exceptionClass.getSimpleName());
      } catch (Throwable t) {
        if (!exceptionClass.isInstance(t)) threadUnexpectedException(t);
      }
    }
  }

  public abstract class ThreadShouldThrow extends Thread {
    protected abstract void realRun() throws Throwable;

    final Class<?> exceptionClass;

    private void persistResumptionData(MavenExecutionResult result, MavenSession session) {
        boolean hasLifecycleExecutionExceptions =
                result.getExceptions().stream().anyMatch(LifecycleExecutionException.class::isInstance);

        if (hasLifecycleExecutionExceptions) {
            MavenProject rootProject = session.getAllProjects().stream()
                    .filter(MavenProject::isExecutionRoot)
                    .findFirst()

                        for (Field f : k.getDeclaredFields()) {
                          f.setAccessible(true);
                          Object x = f.get(null);
                          if (k.isInstance(x)) {
                            return k.cast(x);
                          }
                        }
                        throw new NoSuchFieldError("the Unsafe");
                      });

                        for (Field f : k.getDeclaredFields()) {
                          f.setAccessible(true);
                          Object x = f.get(null);
                          if (k.isInstance(x)) {
                            return k.cast(x);
                          }
                        }
                        throw new NoSuchFieldError("the Unsafe");
                      });

   * desiredType}.
   */
  @SuppressWarnings("unchecked") // can cast to <T> because non-Ts are removed
  @GwtIncompatible // Class.isInstance
  public static <T> UnmodifiableIterator<T> filter(Iterator<?> unfiltered, Class<T> desiredType) {
    return (UnmodifiableIterator<T>) filter(unfiltered, instanceOf(desiredType));
  }

  /**

* <NOTES SHOULD BE GROUPED PER AREA>

* `tf.data`
    * Adds `NoneTensorSpec` to the public API so that `None`s in `element_spec`
      can be identified via `isinstance(..., tf.NoneTensorSpec)`.

## Thanks to our Contributors

This release contains contributions from many people at Google, as well as:

<INSERT>, <NAME>, <HERE>, <USING>, <GITHUB>, <HANDLE>

# Release 2.20.0

But we want to be able to parameterize that fixed content.

## A "callable" instance { #a-callable-instance }

In Python there's a way to make an instance of a class a "callable".

Not the class itself (which is already a callable), but an instance of that class.

To do that, we declare a method `__call__`:

{* ../../docs_src/dependencies/tutorial011_an_py39.py hl[12] *}