.put(ArrayStoreException.class, e -> e instanceof ArrayStoreException)
          .put(AssertionFailedError.class, e -> e instanceof AssertionFailedError)
          .put(CancellationException.class, e -> e instanceof CancellationException)
          .put(ClassCastException.class, e -> e instanceof ClassCastException)
          .put(
              ConcurrentModificationException.class,

          .put(ArrayStoreException.class, e -> e instanceof ArrayStoreException)
          .put(AssertionFailedError.class, e -> e instanceof AssertionFailedError)
          .put(CancellationException.class, e -> e instanceof CancellationException)
          .put(ClassCastException.class, e -> e instanceof ClassCastException)
          .put(
              ConcurrentModificationException.class,

   *     {@code RuntimeException} as its cause
   * @throws ExecutionError if {@code get} throws an {@code ExecutionException} with an {@code
   *     Error} as its cause
   * @throws CancellationException if {@code get} throws a {@code CancellationException}
   * @throws IllegalArgumentException if {@code exceptionClass} extends {@code RuntimeException} or
   *     does not have a suitable constructor
   * @since 19.0 (in 10.0 as {@code get})

   *     {@code RuntimeException} as its cause
   * @throws ExecutionError if {@code get} throws an {@code ExecutionException} with an {@code
   *     Error} as its cause
   * @throws CancellationException if {@code get} throws a {@code CancellationException}
   * @throws IllegalArgumentException if {@code exceptionClass} extends {@code RuntimeException} or
   *     does not have a suitable constructor
   * @since 19.0 (in 10.0 as {@code get})

import com.google.errorprone.annotations.ForOverride;
import com.google.errorprone.annotations.concurrent.LazyInit;
import com.google.j2objc.annotations.RetainedLocalRef;
import java.util.concurrent.CancellationException;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Executor;
import javax.annotation.CheckForNull;
import org.checkerframework.checker.nullness.qual.Nullable;

                    + localInputFuture.getClass()
                    + " threw "
                    + e.getClass()
                    + " without a cause");
      }
    } catch (Throwable t) { // this includes CancellationException and sneaky checked exception
      throwable = t;
    }

    if (throwable == null) {
      /*
       * The cast is safe: There was no exception, so the assignment from getDone must have