src/sap.ui.core/src/sap/ui/core/util/reflection/BaseTreeModifier.js
function (vControl, oAppComponent, bSuppressLogging) {

			var sControlId = vControl instanceof ManagedObject ? vControl.getId() : vControl;
			var bIsGenerated = ManagedObjectMetadata.isGeneratedId(sControlId);

			if (!bIsGenerated || this.hasLocalIdSuffix(vControl, oAppComponent)) {
				return true;
			} else {

				var sHasConcatenatedId = sControlId.indexOf("--") !== -1;
				if (!bSuppressLogging && !sHasConcatenatedId) {
					Log.warning("Control ID was generated dynamically by SAPUI5. To support SAPUI5 flexibility, a stable control ID is needed to assign the changes to.", sControlId);
				}
				return false;
			}
		}
function (vControl, oAppComponent, bSuppressLogging) {

			var sControlId = vControl instanceof ManagedObject ? vControl.getId() : vControl;
			var bIsGenerated = ManagedObjectMetadata.isGeneratedId(sControlId);

			if (!bIsGenerated || this.hasLocalIdSuffix(vControl, oAppComponent)) {
				return true;
			} else {

				var sHasConcatenatedId = sControlId.indexOf("--") !== -1;
				if (!bSuppressLogging && !sHasConcatenatedId) {
					Log.warning("Control ID was generated dynamically by SAPUI5. To support SAPUI5 flexibility, a stable control ID is needed to assign the changes to.", sControlId);
				}
				return false;
			}
		}
function ( vControl , oAppComponent , bSuppressLogging ) { var sControlId = vControl instanceof ManagedObject ? vControl . getId ( ) : vControl ; var bIsGenerated = ManagedObjectMetadata . isGeneratedId ( sControlId ) ; if ( ! bIsGenerated || this . hasLocalIdSuffix ( vControl , oAppComponent ) ) { return true ; } else { var sHasConcatenatedId = sControlId . indexOf ( "--" ) !== - 1 ; if ( ! bSuppressLogging && ! sHasConcatenatedId ) { Log . warning ( "Control ID was generated dynamically by SAPUI5. To support SAPUI5 flexibility, a stable control ID is needed to assign the changes to." , sControlId ) ; } return false ; } }
Checks if the control id is generated or maintained by the application.

@param {sap.ui.core.Control|string} vControl - Control instance or ID
@param {sap.ui.core.Component} oAppComponent - oAppComponent application component, needed only if vControl is a string (ID)
@param {boolean} [bSuppressLogging] bSuppressLogging - Flag to suppress the warning in the console
@returns {boolean} <code>true</code> if the ID is maintained by the application
@protected
Checks if the control id is generated or maintained by the application .