docs: function (obj) {
  		if (typeof obj !== "object" || obj === null) {
  			return obj;
  		}
  		
  		if (obj instanceof Date) {
  			return new Date(obj.getTime());
  		}
  		
  		if (obj instanceof RegExp) {
  			return new RegExp(obj);
  		}
  		
  		if (obj instanceof Array && Object.keys(obj).every(function (k) {
  				return !isNaN(k);
  			})) {
  			return obj.slice(0);
  		}
  		var _obj = {};
  		for (var attr in obj) {
  			if (Object.hasOwnProperty.call(obj, attr)) {
  				_obj[attr] = swagger.cloneObj(obj[attr]);
  			}
  		}
  		return _obj;
  	}