public @Nullable Object[] toArray() {
      synchronized (mutex) {
        return delegate().toArray();
      }
    }

    @Override
    @SuppressWarnings("nullness") // b/192354773 in our checker affects toArray declarations
    public <T extends @Nullable Object> T[] toArray(T[] a) {
      synchronized (mutex) {
        return delegate().toArray(a);
      }
    }

* Update golang/x/net dependency to bring in fixes for CVE-2019-9512, CVE-2019-9514 ([#81522](https://github.com/kubernetes/kubernetes/pull/81522), [@cblecker](https://github.com/cblecker))
* Update to use go 1.12.8 ([#81390](https://github.com/kubernetes/kubernetes/pull/81390), [@cblecker](https://github.com/cblecker))
* Update to use go 1.12.9 ([#81489](https://github.com/kubernetes/kubernetes/pull/81489), [@BenTheElder](https://github.com/BenTheElder))

      // creating an ArrayList so filtering happens once
      return Lists.newArrayList(iterator()).toArray();
    }

    @Override
    @SuppressWarnings("nullness") // b/192354773 in our checker affects toArray declarations
    public <T extends @Nullable Object> T[] toArray(T[] array) {
      return Lists.newArrayList(iterator()).toArray(array);
    }
  }

  /**

      expectedModCount++;
      if (cursor < size()) {
        MoveDesc<E> moved = removeAt(cursor);
        if (moved != null) {
          // Either both are null or neither is, but we check both to satisfy the nullness checker.
          if (forgetMeNot == null || skipMe == null) {
            forgetMeNot = new ArrayDeque<>();
            skipMe = new ArrayList<>(3);
          }

- Update to use go1.12.12 ([#84064](https://github.com/kubernetes/kubernetes/pull/84064), [@cblecker](https://github.com/cblecker))
- Update to go 1.12.10 ([#83139](https://github.com/kubernetes/kubernetes/pull/83139), [@cblecker](https://github.com/cblecker))
- Update default etcd server version to 3.4.3 ([#84329](https://github.com/kubernetes/kubernetes/pull/84329), [@jingyih](https://github.com/jingyih))

    return (delegate != null) ? delegate.toArray() : Arrays.copyOf(requireElements(), size);
  }

  @CanIgnoreReturnValue
  @Override
  @SuppressWarnings("nullness") // b/192354773 in our checker affects toArray declarations
  public <T extends @Nullable Object> T[] toArray(T[] a) {
    if (needsAllocArrays()) {
      if (a.length > 0) {
        a[0] = null;
      }
      return a;
    }

![Swagger UI](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

* Click on the button "Try it out", it allows you to fill the parameters and directly interact with the API:

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-04-swagger-03.png)

* Upgrade golang version to 1.7.6 ([#46405](https://github.com/kubernetes/kubernetes/pull/46405), [@cblecker](https://github.com/cblecker))

        if (scheduleFailure != null) {
          service.notifyFailed(scheduleFailure);
        }
        return toReturn;
      }

      @GuardedBy("lock")
      /*
       * The GuardedBy checker warns us that we're not holding cancellationDelegate.lock. But in
       * fact we are holding it because it is the same as this.lock, which we know we are holding,

But at the same time, functions defined with `async def` have to be "awaited". So, functions with `async def` can only be called inside of functions defined with `async def` too.

So, about the egg and the chicken, how do you call the first `async` function?