} catch (final IOException e) {
                // StringWriter close() should not throw IOException, but log just in case
                if (logger.isDebugEnabled()) {
                    logger.debug("Unexpected IOException while closing StringWriter", e);
                }
            }
            return buf.toString();
        };
        final String message;

   * Comparator}, which can violate the natural ordering. Using this method (or in general using
   * {@code Range}) with unnaturally-ordered maps can lead to unexpected and undefined behavior.
   *
   * @since 20.0
   */
  @GwtIncompatible // NavigableMap
  public static <K extends Comparable<? super K>, V extends @Nullable Object>

   * Comparator}, which can violate the natural ordering. Using this method (or in general using
   * {@code Range}) with unnaturally-ordered maps can lead to unexpected and undefined behavior.
   *
   * @since 20.0
   */
  @GwtIncompatible // NavigableMap
  public static <K extends Comparable<? super K>, V extends @Nullable Object>

        with `--copt=/experimental:preprocessor
        --host_copt=/experimental:preprocessor` (see `.bazelrc` for more
        details). Builds including TensorFlow may fail with unexpected syntax
        errors if these flags are absent. See also
        [this thread on SIG Build](https://groups.google.com/a/tensorflow.org/g/build/c/LbAw8RILvTg/m/ttnuhYU2BgAJ).

## Known Caveats

    try {
      tester.testForwarding(interfaceType, wrapperFunction);
    } catch (AssertionFailedError expected) {
      for (String message : expectedMessages) {
        assertThat(expected).hasMessageThat().contains(message);
      }
      return;
    }
    fail("expected failure not reported");
  }

  private static class ForwardingRunnable implements Runnable {

    try {
      tester.testForwarding(interfaceType, wrapperFunction);
    } catch (AssertionFailedError expected) {
      for (String message : expectedMessages) {
        assertThat(expected).hasMessageThat().contains(message);
      }
      return;
    }
    fail("expected failure not reported");
  }

  private static class ForwardingRunnable implements Runnable {

        try {
            runnable.run();
            throw new AssertionError("Expected " + expectedType.getSimpleName() + " to be thrown");
        } catch (final Throwable t) {
            if (!expectedType.isInstance(t)) {
                throw new AssertionError("Expected " + expectedType.getSimpleName() + " but got " + t.getClass().getSimpleName(), t);
            }
        }
    }

  /* The names of the expected method that tests null checks. */
  private static final ImmutableList<String> NULL_TEST_METHOD_NAMES =
      ImmutableList.of(
          "testNulls", "testNull",
          "testNullPointers", "testNullPointer",
          "testNullPointerExceptions", "testNullPointerException");

  /* The names of the expected method that tests serializable. */

        } catch (Exception e) {
            // Expected in test environment
            assertTrue(true);
        }
    }

    @Test
    public void test_getUserInfo_nullUserCode() {
        try {
            var result = searchLogHelper.getUserInfo(null);
            assertFalse(result.isPresent());
        } catch (Exception e) {
            // Expected in test environment
            assertTrue(true);
        }

   */
  @CanIgnoreReturnValue
  public NetworkBuilder<N, E> allowsSelfLoops(boolean allowsSelfLoops) {
    this.allowsSelfLoops = allowsSelfLoops;
    return this;
  }

  /**
   * Specifies the expected number of nodes in the network.
   *
   * @throws IllegalArgumentException if {@code expectedNodeCount} is negative
   */
  @CanIgnoreReturnValue
  public NetworkBuilder<N, E> expectedNodeCount(int expectedNodeCount) {