Using OWNER in a JSF Managed Bean without create OWNER Interface Porperties keys

[nando2301]

When I try to use Interface Class and I did not declare properties in that Interface, I can't recover it from JSF Managed Bean to use it in xhtml Page.

AppConfig.java

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package org.nando.meetings.utils;

import org.aeonbits.owner.Config;
import org.aeonbits.owner.Config.HotReload;
import org.aeonbits.owner.Config.Sources;

/**
 *
 * @author fernando
 */
@HotReload
@Sources({"file:/Users/fernando/Desktop/borrar/meetings/conf/meetings.properties"})
public interface AppConfig extends Config {
    
}

AppConfigBean.java (JSF Managed Bean)

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 * and open the template in the editor.
 */
package org.nando.meetings.bean;

import javax.inject.Named;
import javax.enterprise.context.SessionScoped;
import java.io.Serializable;
import org.aeonbits.owner.ConfigFactory;
import org.nando.meetings.utils.AppConfig;

/**
 *
 * @author fernando
 */
@Named(value = "appConfigBean")
@SessionScoped
public class AppConfigBean implements Serializable {

    /**
     * Creates a new instance of AppConfigBean
     */
    AppConfig appConfig;
    String AppName;

    public AppConfigBean() {
        appConfig = ConfigFactory.create(AppConfig.class);
    }

    public String getAppName() {
        return appConfig.AppName();
    }

}

Part of xhtml page

        <b:row style="margin-bottom: 70px;">
            <b:navBar brand="#{appConfigBean.appName}" brandHref="#{request.contextPath}/faces/index.xhtml"
                      style="" inverse="true" position="top" sticky="true">
                <!-- Following line is needed for TBS 3.0.1 (panel content overflow issue) -->
                <b:navbarLinks pull="right"><b:navLink value="    " href="#"></b:navLink></b:navbarLinks>
                <b:navbarLinks pull="right">
                    <b:navbarLinks>
                        <b:navLink value="#{app.MenuRegistration}"
                                   href="#{request.contextPath}/faces/Registration.xhtml"></b:navLink>
                    </b:navbarLinks>
                </b:navbarLinks>
            </b:navBar>
        </b:row>

This returns and error saying: Create public method.
Then create it as:

@HotReload
@Sources({"file:/Users/fernando/Desktop/borrar/meetings/conf/meetings.properties"})
public interface AppConfig extends Config {

    public String AppName();
    
}

Please add an add-on or procedure to create Interface Class definitions because my Config File Includes App Messages and has aprox 300 properties, that is so hard to define one by one in OWNER Interface Class.