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
generalFunctions.addAll((new StringFunctionCluster()).
getSupportedFunctions());