// argument name is missing, but we have names() vector
return names;
} else if(names == null) {
// have argument name, but no names() vector, return a1, a2, a3...
return new PrefixedStringVector(argumentName, new IntSequence(1,1,numElements), AttributeMap.EMPTY);
} else {
// we have both argument name and names() vector, return a.x, a.y, a.z
return new PrefixedStringVector(argumentName + ".", names, AttributeMap.EMPTY);
}
}