});
        return parser;
    }

    /**
     * Sets the default field to search in when no field is specified in the query.
     *
     * @param defaultField the default field name
     */
    public void setDefaultField(final String defaultField) {
        this.defaultField = defaultField;
    }

    /**
     * Sets the analyzer used to analyze query terms.
     *

    ProjectBuildingRequest setPluginArtifactRepositories(List<ArtifactRepository> pluginArtifactRepositories);

    List<ArtifactRepository> getPluginArtifactRepositories();

    /**
     * Sets the system properties to use for interpolation and profile activation. The system properties are collected
     * from the runtime environment like {@link System#getProperties()} and environment variables.
     *

  public void testHashCode() {
    int expectedHashCode = 0;
    for (E element : getSampleElements()) {
      expectedHashCode += (element == null) ? 0 : element.hashCode();
    }
    assertEquals(
        "A Set's hashCode() should be the sum of those of its elements.",
        expectedHashCode,
        getSet().hashCode());
  }

  @CollectionSize.Require(absent = CollectionSize.ZERO)
  @CollectionFeature.Require(ALLOWS_NULL_VALUES)

        }
    }

    /**
     * Returns the new token.
     *
     * @return The new token.
     */
    public String getNewToken() {
        return newToken;
    }

    /**
     * Sets the new token.
     *
     * @param newToken The new token.
     */
    public void setNewToken(final String newToken) {
        this.newToken = newToken;
    }

    /**
     * Returns the new segmentation.

    }

    /**
     * Sets the error message.
     *
     * @param error the error message
     */
    public void setError(String error) {
        this.error = error;
    }

    /**
     * Gets the return code.
     *
     * @return the return code
     */
    public int getReturnCode() {
        return returnCode;
    }

    /**
     * Sets the return code.
     *

    /**
     * Total number of hits.
     */
    private long totalHits;

    /**
     * Time taken for the search in milliseconds.
     */
    private long tookInMillis;

    /**
     * Sets the total number of hits.
     * @param totalHits The total number of hits.
     */
    public void setTotalHits(final long totalHits) {
        this.totalHits = totalHits;
    }

    /**

    /**
     * Gets the registration ID to unregister.
     *
     * @return the registration ID
     */
    public String getRegistrationId() {
        return registrationId;
    }

    /**
     * Sets the registration ID to unregister.
     *
     * @param registrationId the registration ID
     */
    public void setRegistrationId(String registrationId) {
        this.registrationId = registrationId;
    }

  }

  private final class EntrySet extends Entries implements Set<Entry<K, V>> {
    @Override
    public int hashCode() {
      return Sets.hashCodeImpl(this);
    }

    @Override
    public boolean equals(@Nullable Object o) {
      return Sets.equalsImpl(this, o);
    }
  }

    assertFalse(
        "Two Sets should not be equal if exactly one of them contains null.",
        getSet().equals(other));
  }

  @CollectionSize.Require(absent = CollectionSize.ZERO)
  public void testEquals_smallerSet() {
    Collection<E> fewerElements = getSampleElements(getNumElements() - 1);
    assertFalse(
        "Sets of different sizes should not be equal.",

    /**
     * Gets the artifact to resolve metadata for.
     *
     * @return The artifact to resolve metadata for or {@code null} if not set.
     */
    Artifact getArtifact();

    /**
     * Sets the artifact for which to resolve metadata.
     *
     * @param artifact The artifact for which to resolve metadata.
     * @return This request, never {@code null}.
     */