code: function (context, name, actual, expectedArray) {
  		'use strict';
  		for (let i = 0; i < expectedArray.length; i++) {
  			if (actual === expectedArray[i]) {
  				return;
  			}
  		}
  		context.assert(
  			{
  				message: "the response did not contain a valid speechOutput",
  				expected: "one of [" + expectedArray.map(text => `"${text}"`).join(', ') + "]",
  				actual: actual,
  				operator: "==", showDiff: true
  			});
  	}
docs: Internal method. Asserts if the string is not part of the array.