stubValidTree(7L, true, true);
        assertThrows(NullPointerException.class, () -> new SmbFileHandleImpl(null, 42, tree, "//server/share", 0, 0, 0, 0, 0L));
    }

    @Test
    @DisplayName("getTree() acquires and returns same tree instance")
    void getTree_acquiresAndReturnsTree() {
        when(cfg.isTraceResourceUsage()).thenReturn(false);
        stubValidTree(7L, true, true);

    return trustedGet(TypeToken.of(type));
  }

  @Override
  public <T extends @NonNull B> @Nullable T getInstance(TypeToken<T> type) {
    return trustedGet(type.rejectTypeVariables());
  }

  @Override
  @CanIgnoreReturnValue
  public <T extends B> @Nullable T putInstance(
      Class<@NonNull T> type, @ParametricNullness T value) {
    return trustedPut(TypeToken.of(type), value);
  }

    return doAssertThrows(expectedThrowable, supplier, /* userPassedSupplier= */ true);
  }

  @CanIgnoreReturnValue
  static <T extends Throwable> T assertThrows(
      Class<T> expectedThrowable, ThrowingRunnable runnable) {
    return doAssertThrows(
        expectedThrowable,
        () -> {
          runnable.run();
          return null;
        },

		return false, "", errNoSuchUser
	}
	cred := u.Credentials
	if cred.IsTemp() {
		return true, cred.ParentUser, nil
	}

	return false, "", nil
}

// IsServiceAccount - returns if given key is a service account
func (sys *IAMSys) IsServiceAccount(name string) (bool, string, error) {
	if !sys.Initialized() {
		return false, "", errServerNotInitialized
	}

	u, found := sys.store.GetUser(name)
	if !found {

    Entry<K, V>[] entries = createArrayWithNullKey();
    entries[0] = entry(null, entries[0].getValue());
    return entries;
  }

  private Entry<K, V>[] getEntriesMultipleNonNullKeys() {
    Entry<K, V>[] entries = createSamplesArray();
    entries[0] = entry(k1(), v0());
    return entries;
  }

  private void expectFirstRemoved(Entry<K, V>[] entries) {
    resetMap(entries);

                // Default error class
                Arguments.of(999, 0, "unknown error class: 999"));
    }

    /**
     * Test the toString method to ensure it returns the expected string format.
     */
    @Test
    @DisplayName("toString should return a correctly formatted string")
    void testToString() {
        int errorClass = NbtException.ERR_SSN_SRVC;
        int errorCode = NbtException.CONNECTION_REFUSED;

                    }));
  }

  /**
   * Returns the {@link Method} instance for {@link #testMergeNullValue()} so that tests of {@link
   * Hashtable} can suppress it with {@code FeatureSpecificTestSuiteBuilder.suppressing()}.
   */
  @J2ktIncompatible
  @GwtIncompatible // reflection
  public static Method getMergeNullValueMethod() {
    return getMethod(MapMergeTester.class, "testMergeNullValue");
  }

          .serialNumber(i.toLong())
          .build(),
      )
    }
    return result
  }

  private fun list(vararg heldCertificates: HeldCertificate): List<Certificate> {
    val result: MutableList<Certificate> = ArrayList()
    for (heldCertificate in heldCertificates) {
      result.add(heldCertificate.certificate)
    }
    return result
  }

	manager.ReloadOnSignal(syscall.SIGHUP)

	return x509Certs, manager, secureConn, nil
}

// contextCanceled returns whether a context is canceled.
func contextCanceled(ctx context.Context) bool {
	select {
	case <-ctx.Done():
		return true
	default:
		return false
	}
}

// bgContext returns a context that can be used for async operations.

        public void setFinished(final boolean finished) {
            this.finished = finished;
        }

        /**
         * Returns whether the process was terminated.
         * @return true if terminated, false otherwise.
         */
        public boolean isTeminated() {
            return teminated;
        }
    }

    /**
     * Thread to read and buffer output from an input stream.
     */