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package cucumber.api.event;

public interface EventPublisher {

    /**
     * Registers an event handler for a specific event.
     * 
     * The available events types are:
     * 

     * {@link Event} - all events.
     * 
{@link TestRunStarted} - the first event sent.
     * 
{@link TestSourceRead} - sent for each feature file read, contains the feature file source.
     * 
{@link SnippetsSuggestedEvent} - sent for each step that could not be matched to a step definition, contains the raw snippets for the step.
     * 
{@link TestCaseStarted} - sent before starting the execution of a Test Case(/Pickle/Scenario), contains the Test Case
     * 
{@link TestStepStarted} - sent before starting the execution of a Test Step, contains the Test Step
     * 
{@link EmbedEvent} - calling scenario.embed in a hook triggers this event.
     * 
{@link WriteEvent} - calling scenario.write in a hook triggers this event.
     * 
{@link TestStepFinished} - sent after the execution of a Test Step, contains the Test Step and its Result.
     * 
{@link TestCaseFinished} - sent after the execution of a Test Case(/Pickle/Scenario), contains the Test Case and its Result.
     * 
{@link TestRunFinished} - the last event sent.
     * 
     *
     * @param eventType the event type for which the handler is being registered
     * @param handler   the event handler
     * @param        the event type
     * @see Event
     */
     void registerHandlerFor(Class eventType, EventHandler handler);

    /**
     * Unregister an event handler for a specific event
     *
     * @param eventType the event type for which the handler is being registered
     * @param handler   the event handler
     * @param        the event type
     */
     void removeHandlerFor(Class eventType, EventHandler handler);

}