public static Path getCanonicalPath(Path path) {
        requireNonNull(path, "path");
        try {
            return path.toRealPath();
        } catch (IOException e) {
            return getCanonicalPath(path.getParent()).resolve(path.getFileName());
        }
    }

    @Nonnull
    public static Map<String, String> toMap(Properties properties) {
        requireNonNull(properties, "properties");

    private final Lookup lookup;

    public PlexusContainerCapsule(ClassLoader previousClassLoader, PlexusContainer plexusContainer) {
        this.previousClassLoader = requireNonNull(previousClassLoader, "previousClassLoader");
        this.plexusContainer = requireNonNull(plexusContainer, "plexusContainer");
        this.lookup = new DefaultLookup(plexusContainer);
    }

    @Override
    public Lookup getLookup() {
        return lookup;

import java.io.Serializable;

import static java.util.Objects.requireNonNull;

public abstract class BaseObject implements Serializable, Cloneable {
    protected transient ChildrenTracking childrenTracking;

    protected Object delegate;

    public BaseObject() {}

    public BaseObject(Object delegate, BaseObject parent) {
        this.delegate = requireNonNull(delegate, "delegate cannot be null");

import org.apache.maven.artifact.handler.DefaultArtifactHandler;
import org.apache.maven.eventspy.AbstractEventSpy;
import org.apache.maven.execution.ExecutionEvent;

import static java.util.Objects.requireNonNull;

/**
 */
@Named
@Singleton
public class LegacyArtifactHandlerManager extends AbstractEventSpy {
    private final Map<String, ArtifactHandler> artifactHandlers;

        this.parserRequest = requireNonNull(parserRequest);
        this.cwd = requireNonNull(cwd);
        this.installationDirectory = requireNonNull(installationDirectory);
        this.userHomeDirectory = requireNonNull(userHomeDirectory);
        this.userProperties = requireNonNull(userProperties);
        this.systemProperties = requireNonNull(systemProperties);

    @Override
    @CheckForNull
    protected EndpointPair<N> computeNext() {
      while (true) {
        if (successorIterator.hasNext()) {
          // requireNonNull is safe because successorIterator is empty until we set this.node.
          return EndpointPair.ordered(requireNonNull(node), successorIterator.next());
        }
        if (!advance()) {
          return endOfData();
        }
      }
    }
  }

  /**

public class DefaultModelWriter implements ModelWriter {

    @Override
    public void write(File output, Map<String, Object> options, Model model) throws IOException {
        Objects.requireNonNull(output, "output cannot be null");
        Objects.requireNonNull(model, "model cannot be null");

        output.getParentFile().mkdirs();

        write(new XmlStreamWriter(Files.newOutputStream(output.toPath())), options, model);
    }

 * limitations under the License.
 */

package com.google.common.testing;

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

import com.google.common.annotations.GwtCompatible;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;

      C columnKey = cell.getColumnKey();
      V value = cell.getValue();

      /*
       * These requireNonNull calls are safe because we construct the maps to hold all the provided
       * cells.
       */
      cellRowIndices[i] = requireNonNull(rowIndex.get(rowKey));
      Map<C, V> thisRow = requireNonNull(rows.get(rowKey));
      cellColumnInRowIndices[i] = thisRow.size();
      V oldValue = thisRow.put(columnKey, value);

public class DefaultSettingsWriter implements SettingsWriter {

    @Override
    public void write(File output, Map<String, Object> options, Settings settings) throws IOException {
        Objects.requireNonNull(output, "output cannot be null");
        Objects.requireNonNull(settings, "settings cannot be null");

        output.getParentFile().mkdirs();

        write(Files.newOutputStream(output.toPath()), options, settings);
    }

    @Override