In previous versions of Python, you could have used threads or <a href="https://www.gevent.org/" class="external-link" target="_blank">Gevent</a>. But the code is way more complex to understand, debug, and think about.

In previous versions of NodeJS / Browser JavaScript, you would have used "callbacks". Which leads to "callback hell".

## Coroutines { #coroutines }

        annotations = new ArrayList<>();
        for (Annotation a : classOrMethod.getDeclaredAnnotations()) {
          /*
           * We avoid reflecting on NullMarked because its @Target(..., MODULE) causes problems
           * under JDK 8.
           */
          if (!(a instanceof NullMarked)
              && a.annotationType().isAnnotationPresent(TesterAnnotation.class)) {
            annotations.add(a);

  }

  /**
   * Tests that bridge methods are not subscribed to events. In Java 8, annotations are included on
   * the bridge method in addition to the original method, which causes both the original and bridge
   * methods to be subscribed (since both are annotated @Subscribe) without specifically checking
   * for bridge methods.
   */

        sut.close();

        verify(handle, never()).close(anyLong());
    }

    // Invalid input: constructing with null handle and invoking watch() NPEs
    @Test
    @DisplayName("Null handle causes NPE on watch() (invalid input)")
    void constructor_nullHandle_watch_throwsNPE() {
        SmbWatchHandleImpl sut = new SmbWatchHandleImpl(null, 0, false);

        assertThrows(NullPointerException.class, () -> {

    }

    @Test
    @DisplayName("Test configuration mock is used correctly")
    void testConfigurationUsage() {
        querySecurityDesc = new NtTransQuerySecurityDesc(mockConfig, 0x1234, OWNER_SECURITY_INFORMATION);

        // Verify that the configuration was passed to parent constructor
        verify(mockConfig, atLeastOnce()).getTransactionBufferSize();
    }

collected 6 items

---> 100%

test_main.py <span style="color: green; white-space: pre;">......                            [100%]</span>

<span style="color: green;">================= 1 passed in 0.03s =================</span>
```

      return;
    }
    inputFuture = null;

    if (localInputFuture.isCancelled()) {
      @SuppressWarnings("unchecked")
      boolean unused =
          setFuture((ListenableFuture<O>) localInputFuture); // Respects cancellation cause setting
      return;
    }

    /*
     * Any of the setException() calls below can fail if the output Future is cancelled between now

     *
     * If the server is absent it is set to "127.0.0.1"
     */
    /**
     * Parses a DCERPC binding string into a DcerpcBinding object
     * @param str the binding string to parse
     * @return the parsed DcerpcBinding object
     * @throws DcerpcException if the binding string is malformed
     */
    protected static DcerpcBinding parseBinding(final String str) throws DcerpcException {
        int state, mark, si;

- Choice of erasure set size is automatic based on the number of drives available, let's say for example if there are 32 servers and 32 drives which is a total of 1024 drives. In this scenario 16 becomes the erasure set size. This is decided based on the greatest common divisor (GCD) of acceptable erasure set sizes ranging from *4 to 16*.

    this.delegate = checkNotNull(delegate);
  }

  /**
   * Wraps a {@code Callable} for submission to the underlying executor. This method is also applied
   * to any {@code Runnable} passed to the default implementation of {@link #wrapTask(Runnable)}.
   */
  protected abstract <T extends @Nullable Object> Callable<T> wrapTask(Callable<T> callable);

  /**