oak-blob-plugins/src/main/java/org/apache/jackrabbit/oak/plugins/blob/ExtendedBlobStatsCollector.java
oak-blob/src/main/java/org/apache/jackrabbit/oak/spi/blob/stats/BlobStatsCollector.java

oak-blob-plugins/src/main/java/org/apache/jackrabbit/oak/plugins/blob/datastore/AbstractDataStoreService.java
oak-blob/src/main/java/org/apache/jackrabbit/oak/spi/blob/osgi/FileBlobStoreService.java