function findSymbol (a) {
						return a.some(function (o) {
							var bFound = o.name === sControlName;
							if (!bFound && o.nodes) {
								return findSymbol(o.nodes);
							}
							return bFound;
						});
					}
Checks if a control has API Reference
@param {string} sControlName
@return {Promise} A promise that resolves to {boolean}