*
   * @since 20.0
   */
  public static void throwIfUnchecked(Throwable throwable) {
    checkNotNull(throwable);
    if (throwable instanceof RuntimeException) {
      throw (RuntimeException) throwable;
    }
    if (throwable instanceof Error) {
      throw (Error) throwable;
    }
  }

  /**
   * Propagates {@code throwable} exactly as-is, if and only if it is an instance of {@link

   *
   * @since 20.0
   */
  public static void throwIfUnchecked(Throwable throwable) {
    checkNotNull(throwable);
    if (throwable instanceof RuntimeException) {
      throw (RuntimeException) throwable;
    }
    if (throwable instanceof Error) {
      throw (Error) throwable;
    }
  }

  /**
   * Propagates {@code throwable} exactly as-is, if and only if it is an instance of {@link

    closer.register(null);
    closer.close();
  }

  static Throwable[] getSuppressed(Throwable throwable) {
    try {
      Method getSuppressed = Throwable.class.getDeclaredMethod("getSuppressed");
      return (Throwable[]) getSuppressed.invoke(throwable);
    } catch (Exception e) {
      throw new AssertionError(e); // only called if running on JDK7
    }
  }

  /**

    closer.register(null);
    closer.close();
  }

  static Throwable[] getSuppressed(Throwable throwable) {
    try {
      Method getSuppressed = Throwable.class.getDeclaredMethod("getSuppressed");
      return (Throwable[]) getSuppressed.invoke(throwable);
    } catch (Exception e) {
      throw new AssertionError(e); // only called if running on JDK7
    }
  }

  /**

      for (int i = 0; i < reps; i++) {
        int f = 0;
        Throwable t = new Throwable();
        for (StackTraceElement ste : getStackTrace(t)) {
          dummy |= ste == duh;
          if (f++ == breakAt) {
            break;
          }
        }
      }
      return dummy;
    }

    abstract List<StackTraceElement> getStackTrace(Throwable t);
  }

  @BeforeExperiment
  public void doBefore() {

import static com.google.common.base.Throwables.getStackTraceAsString;
import static com.google.common.base.Throwables.lazyStackTrace;
import static com.google.common.base.Throwables.lazyStackTraceIsLazy;
import static com.google.common.base.Throwables.throwIfInstanceOf;
import static com.google.common.base.Throwables.throwIfUnchecked;
import static com.google.common.truth.Truth.assertThat;

import static com.google.common.base.Throwables.getStackTraceAsString;
import static com.google.common.base.Throwables.lazyStackTrace;
import static com.google.common.base.Throwables.lazyStackTraceIsLazy;
import static com.google.common.base.Throwables.throwIfInstanceOf;
import static com.google.common.base.Throwables.throwIfUnchecked;
import static com.google.common.truth.Truth.assertThat;

METHOD_NAME_PREFIXES; private static final String[] REFLECTION_METHOD_NAME_PREFIXES; private void Throwables(); public static Exception rethrowAsException(Throwable) throws Exception; private static void rethrow(Throwable) throws Throwable; public static String getStacktrace(Throwable); public static String getTrimmedStackTrace(Throwable); private static java.util.List getTrimmedStackTrace(Throwable); private static reflect.Method initGetSuppressed(); private static boolean hasSuppressed(Throwable);...

    Throwable throwable = thrown;

    // close closeables in LIFO order
    while (!stack.isEmpty()) {
      Closeable closeable = stack.removeFirst();
      try {
        closeable.close();
      } catch (Throwable e) {
        if (throwable == null) {
          throwable = e;
        } else {
          suppressor.suppress(closeable, throwable, e);
        }
      }
    }

      for (int i = 0; i < reps; i++) {
        int f = 0;
        Throwable t = new Throwable();
        for (StackTraceElement ste : getStackTrace(t)) {
          dummy |= ste == duh;
          if (f++ == breakAt) {
            break;
          }
        }
      }
      return dummy;
    }

    abstract List<StackTraceElement> getStackTrace(Throwable t);
  }

  @BeforeExperiment
  public void doBefore() {