@Override
    public int getIndex(final String qName) {
        int max = length * 5;
        for (int i = 0; i < max; i += 5) {
            if (data[i + 2].equals(qName)) {
                return i / 5;
            }
        }
        return -1;
    }
Look up an attribute's index by qualified (prefixed) name.

@param qName The qualified name.
@return The attribute's index, or -1 if none matches.
@see org.xml.sax.Attributes#getIndex(java.lang.String)
stroom-pipeline/src/main/java/stroom/pipeline/xml/event/simple/AttributesImpl.java