if (FAIL_FAST.equals(failureBehavior)
                || FAIL_AT_END.equals(failureBehavior)
                || FAIL_NEVER.equals(failureBehavior)) {
            this.failureBehavior = failureBehavior;
        } else {
            throw new IllegalArgumentException("Invalid failure behavior (must be one of: '" + FAIL_FAST + "', '"
                    + FAIL_AT_END + "', '" + FAIL_NEVER + "').");
        }
    }

```

////

### Return values

And they can return values or not, the values won't be used.

So, you can reuse a normal dependency (that returns a value) you already use somewhere else, and even though the value won't be used, the dependency will be executed:

//// tab | Python 3.9+

```Python hl_lines="11  16"
{!> ../../docs_src/dependencies/tutorial006_an_py39.py!}
```

////

					continue
				}
			}

			if fi.IsDir() {
				// Append SlashSeparator instead of "\" so that sorting is achieved as expected.
				entries = append(entries, fi.Name()+SlashSeparator)
			} else if fi.Mode().IsRegular() {
				entries = append(entries, fi.Name())
			}
			if opts.count > 0 {
				remaining--
			}
		}
	}
	return entries, nil
}

func globalSync() {

	if proxyURL != nil {
		ctransport := transport.(*http.Transport).Clone()
		ctransport.Proxy = http.ProxyURL((*url.URL)(proxyURL))
		cfg.transport = ctransport
	} else {
		cfg.transport = transport
	}

	return cfg, nil

    }
  }

  override fun hashCode(): Int {
    return trustRootIndex.hashCode()
  }

  override fun equals(other: Any?): Boolean {
    return if (other === this) {
      true
    } else {
      other is BasicCertificateChainCleaner && other.trustRootIndex == trustRootIndex
    }
  }

  companion object {
    private const val MAX_SIGNERS = 9
  }

    if (userPassedSupplier) {
      throw new AssertionError(
          "expected to throw "
              + expectedThrowable.getSimpleName()
              + " but returned result: "
              + result);
    } else {
      throw new AssertionError("expected to throw " + expectedThrowable.getSimpleName());
    }
  }

  private enum PlatformSpecificExceptionBatch {
    PLATFORM {
      @GwtIncompatible

    if (userPassedSupplier) {
      throw new AssertionError(
          "expected to throw "
              + expectedThrowable.getSimpleName()
              + " but returned result: "
              + result);
    } else {
      throw new AssertionError("expected to throw " + expectedThrowable.getSimpleName());
    }
  }

  private enum PlatformSpecificExceptionBatch {
    PLATFORM {
      @GwtIncompatible

    if (userPassedSupplier) {
      throw new AssertionError(
          "expected to throw "
              + expectedThrowable.getSimpleName()
              + " but returned result: "
              + result);
    } else {
      throw new AssertionError("expected to throw " + expectedThrowable.getSimpleName());
    }
  }

  private enum PlatformSpecificExceptionBatch {
    PLATFORM {
      @GwtIncompatible

    if (userPassedSupplier) {
      throw new AssertionError(
          "expected to throw "
              + expectedThrowable.getSimpleName()
              + " but returned result: "
              + result);
    } else {
      throw new AssertionError("expected to throw " + expectedThrowable.getSimpleName());
    }
  }

  private enum PlatformSpecificExceptionBatch {
    PLATFORM {
      @GwtIncompatible

    if (userPassedSupplier) {
      throw new AssertionError(
          "expected to throw "
              + expectedThrowable.getSimpleName()
              + " but returned result: "
              + result);
    } else {
      throw new AssertionError("expected to throw " + expectedThrowable.getSimpleName());
    }
  }

  private enum PlatformSpecificExceptionBatch {
    PLATFORM {
      @GwtIncompatible