code: function isValidTextKey(oControl, sKey) {
  			var mTexts = oControl.getTextsToBeHyphenated();
  
  			if (typeof mTexts !== "object") {
  				Log.error("[UI5 Hyphenation] The result of getTextsToBeHyphenated method is not a map object.", oControl.getId());
  				return false;
  			}
  
  			if (Object.keys(mTexts).indexOf(sKey) < 0) {
  				Log.error("[UI5 Hyphenation] The key " + sKey + " is not found in the result of getTextsToBeHyphenated method.", oControl.getId());
  				return false;
  			}
  
  			return true;
  		}
docs: Checks if the required text key is present in the texts map.
  
  @param {sap.m.IHyphenation} oControl The control to be checked
  @param {string} sKey The key to look for
  @returns {boolean} True if the key is correct
  @private