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Kill Bill Hello World plugin

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/*
 * Copyright 2010-2013 Ning, Inc.
 * Copyright 2014 Groupon, Inc
 * Copyright 2014 The Billing Project, LLC
 *
 * The Billing Project licenses this file to you under the Apache License, version 2.0
 * (the "License"); you may not use this file except in compliance with the
 * License.  You may obtain a copy of the License at:
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */

package org.killbill.billing.osgi.api;

import java.util.Set;

/**
 * The purpose is to register within Killbill OSGI services
 * that were exported by specific Killbill plugins
 *
 * @param  The OSGI service exported by Killbill bundles
 */
public interface OSGIServiceRegistration {

    void registerService(OSGIServiceDescriptor desc, T service);

    /**
     * @param serviceName the name of the service as it was registered
     */
    void unregisterService(String serviceName);

    /**
     * @param serviceName the name of the service as it was registered
     * @return the instance that was registered under that name
     */
    T getServiceForName(String serviceName);

    /**
     * @return the set of all the service registered
     */
    Set getAllServices();

    /**
     * @return the type of service that is registered under that OSGIServiceRegistration
     */
    Class getServiceType();
}