TreeBindingProxy = function (oControl, sAggregation) {
		this._oControl = oControl;
		this._sAggregation = sAggregation;
		var oParams = new URLSearchParams(window.location.search);
		this._bEnableV4 = oParams.get("sap-ui-xx-v4tree") === "true";
	}
Proxy for tree controls, such as <code>sap.ui.table.TreeTable</code>
or <code>sap.m.Tree</code>.
Provides proxy methods for binding methods, which can act differently in different
binding types.
Enables the usage of OData V4 bindings in tree controls.

@class

@param {sap.ui.core.Control} oControl control instance
@param {string} sAggregation aggregation name to be applied to, e.g. in TreeTable "rows"

@private
@ui5-restricted sap.m.Tree, sap.ui.table.TreeTable