@Override
    public void endPrefixMapping(final String prefix) throws SAXException {
        try {
            prefixes.remove(prefix);

            if (validator != null) {
                validator.endPrefixMapping(prefix);
            }
        } catch (final RuntimeException e) {
            unexpectedError("endPrefixMapping()", e);
        } finally {
            super.endPrefixMapping(prefix);
        }
    }
Removes prefixes from the prefix map.

@param prefix The prefix to remove.
@throws SAXException Not thrown.
@see stroom.pipeline.filter.AbstractXMLFilter#endPrefixMapping(java.lang.String)
stroom-pipeline/src/main/java/stroom/pipeline/filter/SchemaFilter.java