docs: private FileDetails purgeOldestFile() {
  		debugListLL("prepurgeOldestFile") ;
  		debugListHM("prepurgeOldestFile") ;
  		FileDetails  returnFD = getOldestInactive() ;
  		if (debugLogger.isLoggable(Level.FINE) && LogRepositoryBaseImpl.isDebugEnabled()) {
  			debugLogger.logp(Level.FINE, thisClass, "purgeOldestFile", "oldestInactive: "+((returnFD == null) ? "None":
  				returnFD.file.getPath()));
  		}
  		if (returnFD == null)
  			return null ;
  		if (debugLogger.isLoggable(Level.FINE) && LogRepositoryBaseImpl.isDebugEnabled()) {
  			debugLogger.logp(Level.FINE, thisClass, "purgeOldestFile", "fileList size before remove: "+fileList.size()) ;
  		}
  		
  		if (debugLogger.isLoggable(Level.FINE) && LogRepositoryBaseImpl.isDebugEnabled()) {
  			debugLogger.logp(Level.FINE, thisClass, "purgeOldestFile", "fileList size after remove: "+fileList.size()) ;
  		}
  
  		if (AccessHelper.deleteFile(returnFD.file)) {
  			fileList.remove(returnFD) ;
  			totalSize -= returnFD.size;
  			if (debugLogger.isLoggable(Level.FINE) && LogRepositoryBaseImpl.isDebugEnabled()) {
  				debugLogger.logp(Level.FINE, thisClass, "purgeOldestFile", "delete: "+returnFD.file.getName());
  			}
  			decrementFileCount(returnFD.file);
  			notifyOfFileAction(LogEventListener.EVENTTYPEDELETE) ;		// F004324
  		} else {
  			// Assume the list is out of sync.
  			if (debugLogger.isLoggable(Level.FINE) && LogRepositoryBaseImpl.isDebugEnabled()) {
  				debugLogger.logp(Level.FINE, thisClass, "purgeOldestFile", "Failed to delete file: "+returnFD.file.getPath());
  			}
  			initFileList(true);
  			returnFD = null;
  		}
  		debugListLL("postpurgeOldestFile") ;
  		return returnFD;
  	}