final String[] emptyArray = new String[0];
        assertThat(ArrayUtil.addAll((Object[]) null, (Object[]) null), is(nullValue()));
        assertThat(ArrayUtil.addAll(null, emptyArray).length, is(0));
        assertThat(ArrayUtil.addAll(emptyArray, null), is(sameInstance(emptyArray)));
        assertThat(ArrayUtil.addAll(emptyArray, null), is(sameInstance(emptyArray)));

     * created automatically.
     *
     * @param output The file to serialize the model to, must not be {@code null}.
     * @param options The options to use for serialization, may be {@code null} to use the default values.
     * @param model The model to serialize, must not be {@code null}.
     * @throws IOException If the model could not be serialized.
     */

    protected void assertObjectNotNull(String variableName, Object value) {
        if (variableName == null) {
            String msg = "The value should not be null: variableName=null value=" + value;
            throw new IllegalArgumentException(msg);
        }
        if (value == null) {
            String msg = "The value should not be null: variableName=" + variableName;
            throw new IllegalArgumentException(msg);
        }

            }

            if (location == null) {
                location = tracker.getLocation(EMPTY);
            }
        }

        return location != null ? new org.apache.maven.model.InputLocation(location) : null;
    }

    private static boolean equals(String s1, String s2) {
        String c1 = s1 == null ? "" : s1.trim();
        String c2 = s2 == null ? "" : s2.trim();
        return c1.equals(c2);

        if (available != null) {
            addFieldToSource(sourceMap, "available", available);
        }
        if (boost != null) {
            addFieldToSource(sourceMap, "boost", boost);
        }
        if (configParameter != null) {
            addFieldToSource(sourceMap, "configParameter", configParameter);
        }
        if (createdBy != null) {

            throws IntrospectionException {
        if (value == null || key == null) {
            return null;
        }

        if (value instanceof Map) {
            return ((Map) value).get(key);
        }

        final String message = String.format(
                "The token '%s' at position '%d' refers to a java.util.Map, but the value "

  private val key: String

  /** Non-null for client web sockets. These can be canceled. */
  internal var call: Call? = null

  /** This task processes the outgoing queues. Call [runWriter] to after enqueueing. */
  private var writerTask: Task? = null

  /** Null until this web socket is connected. Only accessed by the reader thread. */
  private var reader: WebSocketReader? = null

        currentPageNumber = getDefaultCurrentPageNumber();

        id = null;
        name = null;
        target = null;
        cronExpression = null;
        scriptType = null;
        crawler = null;
        jobLogging = null;
        available = null;
        sortOrder = null;
        createdBy = null;
        createdTime = null;
        versionNo = null;

    }

    protected int getDefaultCurrentPageNumber() {

                if (source == null) {
                    // we need to check the whole reactor in case it's a dependency
                    loadFullReactor();
                    source = getSource(groupId, artifactId);
                }
                if (source != null) {
                    if (!addEdge(from, source.getPath(), problems)) {
                        return null;
                    }

                }
            }
        }
        return null;
    }

    private String getError(File touchFile, String key) {
        Properties props = read(touchFile);
        if (props != null) {
            return props.getProperty(key + ERROR_KEY_SUFFIX);
        }
        return null;
    }

    private Properties read(File touchfile) {
        if (!touchfile.canRead()) {