in src/main/java/org/apache/sling/rewriter/impl/FactoryCache.java [146:153]
public Transformer getTransformer(final String type) {
final TransformerFactory factory = this.transformerTracker.getFactory(type);
if ( factory == null ) {
LOGGER.debug("Requested transformer factory for type '{}' not found.", type);
return null;
}
return factory.createTransformer();
}