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package javax.faces.annotation;

import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

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

import javax.enterprise.util.Nonbinding;
import javax.inject.Qualifier;

/**
 * The presence of this annotation on a managed
 * bean deployed within an application causes version specific features
 * to be enabled as specified in the enum {@link Version}
 */
@Qualifier
@Target(TYPE)
@Retention(RUNTIME)
public @interface FacesConfig {

    public static enum Version {

        /**
         * This value indicates CDI should be used
         * for EL resolution as well as enabling JSF CDI injection, as specified
         * in Section 5.6.3 "CDI for EL Resolution" and Section 5.9 "CDI Integration".
         */
        JSF_2_3

    }

    /**
     * The value of this attribute indicates that
     * features corresponding to this version must be enabled for this application.
     * @return the spec version for which the features must be enabled.
     */
    @Nonbinding Version version() default Version.JSF_2_3;

}