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JSR-000344: JavaServer(TM) Faces 2.2 API
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package javax.faces.view.facelets;

/**
 * An interface that allows other code 
 * to identify FaceletHandlers that correspond to component facets.
 *
 * @since 2.0
 */
public interface FacetHandler {

    /**
     * Returns the resolved literal String value 
     * of the facet name after evaluating EL.
     *
     * @param ctx the FaceletContext for this view execution
     */
    public String getFacetName(FaceletContext ctx);
}