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Netbeans does not display inherited prototype methods for code completions.
I am using JQuery to extend an objects definition
Simple object inheritance using JQuery

Detection.prototype = $.extend({}, AbstractDetection.prototype, AbstractBoundingBox.prototype);
Detection.prototype.constructor = Detection;

function Detection() {
    // Inheritance
    AbstractDetection.call(this);  
    AbstractBoundingBox.call(this);    
}

When I try to use code completion Netbeans does not display any of the methods from either abstract object.