putFunction(new IsEmptyFunction(), reservedFunctions);
putFunction(new IsFunction(), reservedFunctions);
putFunction(new IsNullFunction(), reservedFunctions);
putFunction(new LessEqThanFunction(), reservedFunctions);
putFunction(new LessThanFunction(), reservedFunctions);
putFunction(new NotEqualsFunction(), reservedFunctions);
putFunction(new NotFunction(), reservedFunctions);
putFunction(new NotCharFunction(), reservedFunctions);
putFunction(new OrFunction(), reservedFunctions);
putFunction(new StartsWithFunction(), reservedFunctions);
putFunction(new MatchesFunction(), reservedFunctions);