BooleanFunctionCall Concat Contains CountFunctionCall ErrorFunctionCall ExtensionFunctionCall FalseFunctionCall FormatNumber FunctionCallImpl IdFunctionCall IdRefFunctionCall LangFunctionCall LastFunctionCall Normalize NotFunctionCall NumberFunctionCall PositionFunctionCall StartsWith StringFunctionCall StringLength Substring SubstringAfter SubstringBefore SumFunctionCall TextFunctionCall Translate TrueFunctionCall XMLNamesFunctionCall