function _extractServiceInfo(vServiceInfo) {
		if (typeof vServiceInfo === "string") {
			return UriParser.parseServiceUri(vServiceInfo);
		}

		return vServiceInfo;
	}
Returns a map, that contains the service name and the service version.

@private
@param  {string|map} vServiceInfo - service uri or service info map containing <code>serviceName</code>, <code>serviceVersion</code> and <code>serviceType</code>
@return {map} serviceItem