function findNode(oContext, sWhich) {
		if (!oContext.children) {
			return null;
		}
		if (sWhich === "All") {
			return oContext;
		}
		for (var j = 0; j < oContext.children.length; j++) {
			if (oContext.children[j].context.getObject().text === sWhich) {
				// found the right node
				return oContext.children[j];
			}
		}
	}
Finds a tree node in the debug modules selection tree
@param {object} oContext The context of the tree to be checked
@param {string} sWhich Module string like "sap/ui/Device.js"
@return {object|null} The context of the found or null if module string was not found