}
ALEParser.ExtendedVertex ev = Generator.lookupAttributeExtended(arg, assign._class, ast);
if (ev != null && ev.isMaybeType) {
throw new InvalidGrammarException(
"'maybe' types not currently implemented in OpenCL backend. Yell at Matt.");
} else {
params.append(OpenCLFieldsHelper.typeStringToOclType(Generator.extendedGet(ast, assign._class,
arg).strType));
}