@J2ktIncompatible
  @GwtIncompatible // threads
  private static boolean trySetName(String threadName, Thread currentThread) {
    /*
     * setName should usually succeed, but the security manager can prohibit it. Is there a way to
     * see if we have the modifyThread permission without catching an exception?
     */
    try {
      currentThread.setName(threadName);
      return true;
    } catch (SecurityException e) {

# Templates

You can use any template engine you want with **FastAPI**.

A common choice is Jinja2, the same one used by Flask and other tools.

There are utilities to configure it easily that you can use directly in your **FastAPI** application (provided by Starlette).

## Install dependencies

Make sure you create a [virtual environment](../virtual-environments.md){.internal-link target=_blank}, activate it, and install `jinja2`:

<div class="termy">

        }
        /*
         * This transform exists solely to shrink the size of the fastutil jar from 25MB to 1.7MB.
         * The keys to the map parameter are used as the names of the files to which to apply the transform - there is only one entry.
         * It would perhaps be better to do this more selectively instead of applying this transform so broadly and having
         * it just no-op in most cases.
         */

        if (testClass != null) {
          access.registerAsUsed(testClass)
          registerTest(access, testClass)
        }
      } catch (e: Exception) {
        // If you throw an exception here then native image building fails half way through
        // silently without rewriting the binary. So we report noisily, but keep going and prefer
        // running most tests still.
        e.printStackTrace()
      }
    }

      @Override
      public int hashCode() {
        return 1;
      }
    }
  }

  private static void assertContains(String expectedSubstring, String actual) {
    // TODO(kevinb): use a Truth assertion here
    if (!actual.contains(expectedSubstring)) {
      fail("expected <" + actual + "> to contain <" + expectedSubstring + ">");
    }
  }

      @Override
      public int hashCode() {
        return 1;
      }
    }
  }

  private static void assertContains(String expectedSubstring, String actual) {
    // TODO(kevinb): use a Truth assertion here
    if (!actual.contains(expectedSubstring)) {
      fail("expected <" + actual + "> to contain <" + expectedSubstring + ">");
    }
  }

                    type.getLanguage().id(),
                    type.getPathTypes().contains(JavaPathType.CLASSES));
            // TODO: watch out for module path
        });

        // Note: here, type decides is artifact added to "build path" (for example during resolution)
        // and "build path" is intermediate data that is used to create actual Java classpath/modulepath

type MutatingWebhookConfigInfo struct {
	Name     string `json:"name"`
	Revision string `json:"revision"`
	Tag      string `json:"tag,omitempty"`
}

// NsInfo represents namespace related information like pods running there.
// It is used to display data and is exposed for integration tests.
type NsInfo struct {
	Name string             `json:"name,omitempty"`
	Pods []*PodFilteredInfo `json:"pods,omitempty"`
}

   * <p>Under j2objc, the necessary APIs exist, but some (perhaps all) return stub values, like
   * empty arrays. Presumably {@link NullPointerTester} could likewise misbehave under j2objc, but I
   * don't know that anyone uses it there, anyway.
   */
  private enum NullnessAnnotationReader {
    @SuppressWarnings("Java7ApiChecker")
    FROM_DECLARATION_AND_TYPE_USE_ANNOTATIONS {
      @Override
      boolean isNullable(Invokable<?, ?> invokable) {

 *
 *  1. If the current call already has a connection that can satisfy the request it is used. Using
 *     the same connection for an initial exchange and its follow-ups may improve locality.
 *
 *  2. If there is a connection in the pool that can satisfy the request it is used. Note that it is
 *     possible for shared exchanges to make requests to different host names! See
 *     [RealConnection.isEligible] for details.
 *