public static BuiltInFunctionInfo get(String normalizedName, List<ParseNode> children) {
initBuiltInFunctionMap();
BuiltInFunctionInfo info = BUILT_IN_FUNCTION_MAP.get(new BuiltInFunctionKey(normalizedName,children.size()));
if (info == null) {
throw new UnknownFunctionException(normalizedName);
}
return info;
}