src/sap.ui.core/src/sap/ui/core/Configuration.js
function checkEnum(oEnum, sValue, sPropertyName) {
		var aValidValues = [];
		for (var sKey in oEnum) {
			if (oEnum.hasOwnProperty(sKey)) {
				if (oEnum[sKey] === sValue) {
					return;
				}
				aValidValues.push(oEnum[sKey]);
			}
		}
		throw new Error("Unsupported Enumeration value for " + sPropertyName + ", valid values are: " + aValidValues.join(", "));
	}
function checkEnum(oEnum, sValue, sPropertyName) {
		var aValidValues = [];
		for (var sKey in oEnum) {
			if (oEnum.hasOwnProperty(sKey)) {
				if (oEnum[sKey] === sValue) {
					return;
				}
				aValidValues.push(oEnum[sKey]);
			}
		}
		throw new Error("Unsupported Enumeration value for " + sPropertyName + ", valid values are: " + aValidValues.join(", "));
	}
function checkEnum ( oEnum , sValue , sPropertyName ) { var aValidValues = [ ] ; for ( var sKey in oEnum ) { if ( oEnum . hasOwnProperty ( sKey ) ) { if ( oEnum [ sKey ] === sValue ) { return ; } aValidValues . push ( oEnum [ sKey ] ) ; } } throw new Error ( "Unsupported Enumeration value for " + sPropertyName + ", valid values are: " + aValidValues . join ( ", " ) ) ; }
Checks if a value exists within an enumerable list.

@param {object} oEnum Enumeration object with values for validation
@param {string} sValue Value to check against enumerable list
@param {string} sPropertyName Name of the property which is checked
@throws {Error} If the value could not be found, an error is thrown
Checks if a value exists within an enumerable list .