If your application (somehow) doesn't have to communicate with anything else and wait for it to respond, use `async def`, even if you don't need to use `await` inside.

---

If you just don't know, use normal `def`.

---

**Note**: You can mix `def` and `async def` in your *path operation functions* as much as you need and define each one using the best option for you. FastAPI will do the right thing with them.

      requireNonNull(connections.removeSuccessor(successor));
      --edgeCount;
    }
    if (isDirected()) { // In undirected graphs, the successor and predecessor sets are equal.
      // Since views are returned, we need to copy the predecessors that will be removed.
      // Thus we avoid modifying the underlying view while iterating over it.
      for (N predecessor : ImmutableList.copyOf(connections.predecessors())) {

      localTask.execute();
    }
  }

  @Override
  void releaseResources(ReleaseResourcesReason reason) {
    super.releaseResources(reason);
    /*
     * If the output future is done, then it won't need to interrupt the task later, so it can clear
     * its reference to it.
     *
     * If the output future is *not* done, then the task field will be cleared after the task runs

      lastMethodCalled = "scheduleWithFixedDelay";
      lastInitialDelay = initialDelay;
      lastDelay = delay;
      lastUnit = unit;
      return null;
    }

    // No need to test these methods as they are handled by WrappingExecutorServiceTest
    @Override
    public boolean awaitTermination(long timeout, TimeUnit unit) {
      throw new UnsupportedOperationException();
    }

                try {
                    // Since we are mutating private static fields from a public static inner class we need to suppress
                    // accessibility controls here.
                    f.setAccessible(true);
                    f.set(null, null);
                } catch (IllegalAccessException e) {

 * }
 *
 * public void testMySubtypes() throws Exception {
 *   new MySubtypeTests().testAllDeclarations();
 * }
 * }
 *
 * The calls to {@link #isSubtype} and {@link #notSubtype} tells the framework what assertions need
 * to be made.
 *
 * <p>The declaration methods must be public.
 */
@AndroidIncompatible // only used by android incompatible tests.
@NullUnmarked
abstract class SubtypeTester implements Cloneable {

                  ListFeature.SUPPORTS_SET)
              .createTestSuite());
    }
    return suite;
  }

  // Test generators.  To let the GWT test suite generator access them, they need to be
  // public named classes with a public default constructor.

  public static final class FloatsAsListGenerator extends TestFloatListGenerator {
    @Override
    protected List<Float> create(Float[] elements) {

    checkNotNull(node, "node");

    NetworkConnections<N, E> connections = nodeConnections.get(node);
    if (connections == null) {
      return false;
    }

    // Since views are returned, we need to copy the edges that will be removed.
    // Thus we avoid modifying the underlying view while iterating over it.
    for (E edge : ImmutableList.copyOf(connections.incidentEdges())) {
      removeEdge(edge);
    }

                  ListFeature.SUPPORTS_SET)
              .createTestSuite());
    }
    return suite;
  }

  // Test generators.  To let the GWT test suite generator access them, they need to be
  // public named classes with a public default constructor.

  public static final class FloatsAsListGenerator extends TestFloatListGenerator {
    @Override
    protected List<Float> create(Float[] elements) {

                  ListFeature.SUPPORTS_SET)
              .createTestSuite());
    }
    return suite;
  }

  // Test generators.  To let the GWT test suite generator access them, they need to be
  // public named classes with a public default constructor.

  public static final class IntsAsListGenerator extends TestIntegerListGenerator {
    @Override
    protected List<Integer> create(Integer[] elements) {