private void addToMap(final Map<String, List<XmlSchemaDoc>> map, final String name, final XmlSchemaDoc xmlSchema) {
        map.computeIfAbsent(name, k -> new ArrayList<>()).add(xmlSchema);
    }
We will clear the schema cache if there are any changes to the schema.
stroom-pipeline/src/main/java/stroom/pipeline/xmlschema/XmlSchemaCache.java