Renderer JSF - Onde está o erro?

Front-end
#1

Quando vou chamar esta tag da minha página JSP, recebo um NullPointerException. É como se a tag não conseguisse achar meu renderer. Alguém conseguiria achar o erro?

faces-config.xml

<?xml version="1.0" encoding="UTF-8"?>
&lt;!DOCTYPE faces-config PUBLIC
  "-//Sun Microsystems, Inc.//DTD JavaServer Faces Config 1.1//EN"
  "http://java.sun.com/dtd/web-facesconfig_1_1.dtd"&gt;
  
&lt;faces-config&gt;
    &lt;component&gt;
        &lt;component-type&gt;BoldOutput&lt;/component-type&gt;
        &lt;component-class&gt;javax.faces.component.UIOutput&lt;/component-class&gt;
        &lt;component-extension&gt;
            &lt;component-family&gt;Bold&lt;/component-family&gt;
            &lt;renderer-type&gt;BoldOutput&lt;/renderer-type&gt;
        &lt;/component-extension&gt;        
    &lt;/component&gt;
    &lt;render-kit&gt;
        &lt;renderer&gt;
            &lt;component-family&gt;Bold&lt;/component-family&gt;
            &lt;renderer-type&gt;BoldOutput&lt;/renderer-type&gt;
            &lt;renderer-class&gt;teste.BoldOutputRenderer&lt;/renderer-class&gt;
        &lt;/renderer&gt;    
    &lt;/render-kit&gt;
&lt;/faces-config&gt;

BoldOutputRenderer.java

package teste;

import java.io.IOException;
import javax.faces.component.*;
import javax.faces.context.*;
import javax.faces.render.Renderer;
/**
 *
 * @author  ranophoenix
 */
public class BoldOutputRenderer extends Renderer{
       
    public void encodeBegin(FacesContext facesContext, UIComponent uIComponent) throws java.io.IOException {
        if (facesContext == null) 
            throw new NullPointerException("Faces Context is Null");
        if (!uIComponent.isRendered()){
            return;
        }
        ResponseWriter writer = facesContext.getResponseWriter();

        Object curvalue = ((UIOutput) uIComponent).getValue();
        writer.write("<b>");
        if (curvalue != null)
            writer.write(curvalue.toString());
        writer.write("</b>");
    }
    
    public void encodeEnd(javax.faces.context.FacesContext facesContext, javax.faces.component.UIComponent uIComponent) throws java.io.IOException {
        //super.encodeEnd(facesContext, uIComponent);
    }
    
    public void encodeChildren(javax.faces.context.FacesContext facesContext, javax.faces.component.UIComponent uIComponent) throws java.io.IOException {
        //super.encodeChildren(facesContext, uIComponent);
    }
    
    public void decode(javax.faces.context.FacesContext facesContext, javax.faces.component.UIComponent uIComponent) {
        //super.decode(facesContext, uIComponent);
    }
    
    public String convertClientId(javax.faces.context.FacesContext facesContext, String str) {
        String retValue;
        
        retValue = super.convertClientId(facesContext, str);
        return retValue;
    }
    
}

BoldOutputTag.java

package teste;

import javax.faces.webapp.UIComponentTag;
import javax.faces.component.*;

import javax.faces.context.*;

/**
 *
 * @author  ranophoenix
 */
public class BoldOutputTag extends UIComponentTag {
    private String value="";
    
    public String getValue(){
        return value;
    }
    
    public void setValue(String value) {
        this.value = value;
    }

    public String getComponentType() {
        return ("BoldOutput");
    }
    
    public String getRendererType() {
        return ("BoldOutput");
    }
    /*
    protected void encodeBegin() throws java.io.IOException {
        ResponseWriter writer = FacesContext.getCurrentInstance().getResponseWriter();
        writer.write("<b>");
        writer.write(value);
        writer.write("</b>");

    }
 */   
}

Penso que erro está na localização do Renderer, pois quando retorno null em getRendererType() da classe BoldOutputTag e descomento as linhas do método encodeBegin() a tag funciona corretamente. Alguém consegue perceber o erro?

#2