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Helidon extension of Weld to support ahead of time compilation

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/*
 * Copyright (c) 2020, 2023 Oracle and/or its affiliates.
 *
 * Licensed 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 io.helidon.microprofile.cdi;

import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

import jakarta.enterprise.util.AnnotationLiteral;
import jakarta.inject.Qualifier;

import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.PARAMETER;
import static java.lang.annotation.ElementType.TYPE;

/**
 * Build time of the application (as opposed to runtime).
 *
 * The initialization happens as soon as possible within CDI bootstrap.
 */
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Qualifier
@Target({ TYPE, METHOD, PARAMETER, FIELD })
public @interface BuildTimeStart {
    /**
     * Annotation literal to use when an annotation instance is needed.
     */
    final class Literal extends AnnotationLiteral implements BuildTimeStart {
        /**
         * Singleton instance of a literal of this annotation.
         */
        public static final Literal INSTANCE = new Literal();

        private static final long serialVersionUID = 1L;
    }
}