code: synchronized String findPath(INodeFileUnderConstruction pendingFile) 
           throws IOException {
       Lease lease = getLease(pendingFile.getClientName());
       if (lease != null) {
         String src = lease.findPath(pendingFile);
         if (src != null) {
           return src;
         }
       }
       throw new IOException("pendingFile (=" + pendingFile + ") not found."
             + "(lease=" + lease + ")");
     }
docs: Find the pathname for the specified pendingFile