getSupportedFunctions());
// add NumericConvertFunction
generalFunctions.addAll((new NumericConvertFunctionCluster()).
getSupportedFunctions());
// add StringNormalizeFunction
generalFunctions.addAll((new StringNormalizeFunctionCluster()).
getSupportedFunctions());
// add general functions from SetFunction
generalFunctions.addAll((new GeneralSetFunctionCluster()).
getSupportedFunctions());
// add the XACML 2.0 string functions