import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.collect.Iterators.peekingIterator;
import static java.nio.charset.StandardCharsets.UTF_8;
import static java.util.Objects.requireNonNull;
import static java.util.concurrent.TimeUnit.SECONDS;

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.common.base.CharMatcher;

 * limitations under the License.
 */

package com.google.common.collect;

import static com.google.common.base.Preconditions.checkNotNull;
import static java.util.Objects.requireNonNull;

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;

		return err
	}

	// Start or resume healing of this erasure set
	if err = z.serverPools[poolIdx].sets[setIdx].healErasureSet(ctx, tracker.QueuedBuckets, tracker); err != nil {
		return err
	}

	// if objects have failed healing, we attempt a retry to heal the drive upto 3 times before giving up.
	if tracker.ItemsFailed > 0 && tracker.RetryAttempts < 4 {
		tracker.RetryAttempts++

		c.Fatalf("policy add error: %v", err)
	}

	info, err := s.adm.InfoCannedPolicy(ctx, "readwrite")
	if err != nil {
		c.Fatalf("policy info err: %v", err)
	}

	// Check that policy with comma is rejected.
	err = s.adm.AddCannedPolicy(ctx, "invalid,policy", policyBytes)
	if err == nil {
		c.Fatalf("invalid policy created successfully")
	}

	infoStr := string(info)

        }
    }

    /**
     * Retrieves a list of files and directories from the storage system.
     *
     * @param prefix the path prefix to list objects under
     * @return list of file and directory information maps
     */
    public static List<Map<String, Object>> getFileItems(final String prefix) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.collect.Iterators.peekingIterator;
import static java.nio.charset.StandardCharsets.UTF_8;
import static java.util.Objects.requireNonNull;
import static java.util.concurrent.TimeUnit.SECONDS;

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.common.base.CharMatcher;

import static com.google.common.util.concurrent.MoreExecutors.directExecutor;
import static com.google.common.util.concurrent.Uninterruptibles.getUninterruptibly;
import static java.util.Objects.requireNonNull;
import static java.util.logging.Level.SEVERE;

import com.google.common.annotations.GwtCompatible;
import com.google.common.collect.ImmutableCollection;
import com.google.errorprone.annotations.ForOverride;

## Context Managers { #context-managers }

### What are "Context Managers" { #what-are-context-managers }

"Context Managers" are any of those Python objects that you can use in a `with` statement.

For example, [you can use `with` to read a file](https://docs.python.org/3/tutorial/inputoutput.html#reading-and-writing-files):

```Python
with open("./somefile.txt") as f:

  // Initialize a input_tensor vector with `nullptr` values.
  std::vector<const Tensor*> input_tensors_vector(num_inputs, nullptr);
  // A vector to keep track of newly created `tf::Tensor` objects.
  std::vector<Tensor> all_input_tensors;
  // Update the vector with information from `input_tensors` if provided.
  if (input_tensors != nullptr) {
    // Note that we take the address of the elements in `all_input_tensors`

import org.junit.Before;
import org.junit.Test;

/**
 * Abstract base class for testing implementations of {@link Graph} interface. Graph instances
 * created for testing should have Integer node and String edge objects.
 *
 * <p>Test cases that should be handled similarly in any graph implementation are included in this
 * class. For example, testing that {@code nodes()} method returns the set of the nodes in the