    001    // Copyright 2007 The Apache Software Foundation
    002    //
    003    // Licensed under the Apache License, Version 2.0 (the "License");
    004    // you may not use this file except in compliance with the License.
    005    // You may obtain a copy of the License at
    006    //
    007    //     http://www.apache.org/licenses/LICENSE-2.0
    008    //
    009    // Unless required by applicable law or agreed to in writing, software
    010    // distributed under the License is distributed on an "AS IS" BASIS,
    011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    012    // See the License for the specific language governing permissions and
    013    // limitations under the License.
    014
    015    package org.apache.tapestry5.ioc.services;
    016
    017    import java.lang.annotation.Documented;
    018    import static java.lang.annotation.ElementType.FIELD;
    019    import static java.lang.annotation.ElementType.PARAMETER;
    020    import java.lang.annotation.Retention;
    021    import static java.lang.annotation.RetentionPolicy.RUNTIME;
    022    import java.lang.annotation.Target;
    023
    024    /**
    025     * Marks services provided by this module that may need to be unambiguously referenced. Injecting with this marker
    026     * annotation and the correct type ensure that the version defined in this module is used, even if another module
    027     * provides a service with the same service interface.
    028     */
    029    @Target(
    030            { PARAMETER, FIELD })
    031    @Retention(RUNTIME)
    032    @Documented
    033    public @interface Builtin
    034    {
    035
    036    }