checkArgument(occurrences > 0, "Invalid occurrences: %s", occurrences);

      while (true) {
        int current = count(element);
        if (current == 0) {
          return 0;
        }
        if (occurrences >= current) {
          if (countMap.remove(element, current)) {
            return current;
          }
        } else {
          // We know it's an "E" because it already exists in the map.

/**
 * Provides information about the current Maven runtime.
 *
 * @since 3.0.2
 */
public interface RuntimeInformation {

    /**
     * Retrieves the current Maven version, for example "3.0.2".
     *
     * @return The current Maven version or an empty string if unknown, never {@code null}.
     */
    String getMavenVersion();

    /**

    /**
     * Current position in file
     * 
     * @return current position
     */
    long getFilePointer ();


    /**
     * Seek to new position
     * 
     * @param pos
     */
    void seek ( long pos );


    /**
     * Get the current file length
     * 
     * @return file length
     * @throws SmbException
     */
    long length () throws SmbException;


    /**

public interface Location {

    /**
     * Return the line number where the current event ends,
     * returns -1 if none is available.
     * @return the current line number
     */
    int getLineNumber();

    /**
     * Return the column number where the current event ends,
     * returns -1 if none is available.
     * @return the current column number
     */
    int getColumnNumber();

    /**

    }

    /**
     * Gets the type of the event.
     *
     * @return The type of the event, never {@code null}.
     */
    Type getType();

    /**
     * Gets the session from which this event originates.
     *
     * @return The current session, never {@code null}.
     */
    MavenSession getSession();

    /**
     * Gets the current project (if any).
     *

        double z = a.getAndAdd(y);
        assertBitEquals(x, z);
        assertBitEquals(x + y, a.get());
      }
    }
  }

  /** addAndGet adds given value to current, and returns current value */
  public void testAddAndGet() {
    for (double x : VALUES) {
      for (double y : VALUES) {
        AtomicDouble a = new AtomicDouble(x);
        double z = a.addAndGet(y);

        List<JApiCmpWorkerAction.Archive> current = !newArchives.isEmpty() ? toArchives(newArchives) : inferArchives(getNewClasspath());
        execForNewGradle(baseline, current);
    }

    private void execForNewGradle(final List<JApiCmpWorkerAction.Archive> baseline, final List<JApiCmpWorkerAction.Archive> current) {
        WorkQueue queue = getWorkerExecutor().processIsolation(spec -> {

     */
    Map<String, String> getUserProperties();

    /**
     * Gets the base directory of the current project (if any).
     *
     * @return The base directory of the current project or {@code null} if none.
     */
    Path getProjectDirectory();

    /**
     * Gets current calculated project properties
     *
     * @return The project properties, never {@code null}.
     */

    /**
     * Returns the default flags for a generic Type-1 message in the
     * current environment.
     * 
     * @return An <code>int</code> containing the default flags.
     */
    public static int getDefaultFlags() {
        return DEFAULT_FLAGS;
    }

    /**
     * Returns the default domain from the current environment.
     *
     * @return A <code>String</code> containing the default domain.

     * current environment.
     *
     * @return An <code>int</code> containing the default flags.
     */
    public static int getDefaultFlags() {
        return DEFAULT_FLAGS;
    }

    /**
     * Returns the default flags for a Type-3 message created in response
     * to the given Type-2 message in the current environment.
     *