String attValue = xmlReader.getAttributeValue(i);
if (attributes.containsKey(att)) {
error("Duplicate values for attribute %s on tag %s", att, getTagName());
}
TextTokenizer tt = TextTokenizer.tokenize(attValue, getLocation());
Object value = tt.asValue(getParentHandler());
AttributeDefRefImpl.Builder atBuilder = new AttributeDefRefImpl.Builder();
atBuilder.setDescriptor(att);
atBuilder.setLocation(getLocation());
atBuilder.setValue(value);