public Iterator<String> declaredAttributes(String elname) {
        return declaredAttributes(elementInfo.get(elname));
    }
Get the declared attributes for an element type.

@param elname
           The name of the element type.
@return An iterator over all the attributes declared for a specific
        element type. The results will be valid only after the DTD (if
        any) has been parsed.
@see #getAttributeType
@see #getAttributeEnumeration
@see #getAttributeDefaultValueType
@see #getAttributeDefaultValue
@see #getAttributeExpandedValue
src/nu/validator/gnu/xml/aelfred2/XmlParser.java