code: function (sRule, bAsync) {
  			var sCheckFunction = this.model.getProperty(sRule + "/check");
  
  			if (!sCheckFunction) {
  				return;
  			}
  
  			// Check if a function is found
  			var oMatch = sCheckFunction.match(/function[^(]*\(([^)]*)\)/);
  
  			if (!oMatch) {
  				return;
  			}
  
  			// Get the parameters of the function found and trim, then split by word.
  			var aParams = oMatch[1].trim().split(/\W+/);
  			// Add missing parameters to ensure the resolve function is passed on the correct position.
  			aParams[0] = aParams[0] || "oIssueManager";
  			aParams[1] = aParams[1] || "oCoreFacade";
  			aParams[2] = aParams[2] || "oScope";
  
  			// If async add a fnResolve to the template else remove it.
  			if (bAsync) {
  				aParams[3] = aParams[3] || "fnResolve";
  			} else {
  				aParams = aParams.slice(0, 3);
  			}
  
  			// Replace the current parameters with the new ones.
  			var sNewCheckFunction = sCheckFunction.replace(/function[^(]*\(([^)]*)\)/, "function (" + aParams.join(", ") + ")");
  
  			this.model.setProperty(sRule + "/check", sNewCheckFunction);
  		}
docs: Add fnResolve to the check function when async is set to true otherwise removes it.
  @private
  @param {string} sRule the model path to edit or new rule
  @param {bAsync} bAsync the async property of the rule