ITestNGListenerFactory.java

package org.testng;

/**
 * A factory used to create instances of ITestNGListener.  Users can implement this interface
 * in any of their test classes but there can be only one such instance.
 */
public interface ITestNGListenerFactory {

  /**
   * Create and return an instance of the listener class passed in parameter.  Return null
   * if you want to use the default factory.
   */
  ITestNGListener createListener(Class<? extends ITestNGListener> listenerClass);
}