anchor.diff:  
   ==== S3BundlePersistenceProvider
   
  -The S3BundlePersistenceProvider stores the content of extension bundles in AWS S3 bucket. The bucket is expected to already exist and be accessible to the credentials provided to the persistence providcer.
  -
  -NOTE: This provider must be added to the classpath by specifying a custom extension directory in nifi-registry.properties, such as nifi.registry.extension.dir.aws=./ext/aws/lib, where ./ext/aws/ contains the contents of the extracted nifi-registry-aws-assembly-<version>-bin.zip.
  +The `S3BundlePersistenceProvider` stores the content of extension bundles in a AWS S3 bucket. The bucket is expected to already exist and be accessible to the credentials provided to the persistence providcer.
  +
  +NOTE: This provider must be added to the classpath by specifying a custom extension directory in _nifi-registry.properties_, such as `nifi.registry.extension.dir.aws=./ext/aws/lib`, where `./ext/aws/` contains the contents of the extracted _nifi-registry-aws-assembly-<version>-bin.zip_.
   
   The key of an extension bundle in the S3 bucket will be the following:
   ....
  
positive.code: ]
  ....
  
  With the example aliases configuration above, the URLs would be written to the FlowPersistenceProvider as the following:
  ....
  "processGroups" : [ {
        ...
  
negative.code: 
  ==== FileSystemBundlePersistenceProvider
  
  The `FileSystemBundlePersistenceProvider` stores the content of extension bundles on the local file system. The bundles are organized in directories according to bucket id, group, artifact, and version.
  
  Example of persisted extension bundles:
  ....
  