tree.release();
                            } catch (Exception e) {
                                log.debug("Error during emergency tree cleanup", e);
                            }
                        }
                        this.trees.clear();
                    } catch (Exception e) {
                        log.debug("Error clearing trees during emergency cleanup", e);

        this.connectionState.set(2); // connected

        try {
            validateNegotiation(transport, sess);
        } catch (final CIFSException se) {
            try {
                transport.disconnect(true);
            } catch (final IOException e) {
                log.warn("Failed to disconnect transport", e);
                se.addSuppressed(e);
            }
            throw se;

                try {
                    trans.ensureConnected();
                } catch (final IOException e) {
                    removeTransport(trans);
                    throw e;
                }
                return trans.acquire();
            } catch (final IOException e) {
                final String hostAddress = addr.getHostAddress();

                        successCount.incrementAndGet();

                        // Small delay to increase chance of race conditions
                        Thread.yield();
                    }
                } catch (Exception e) {
                    exceptions.add(e);
                } finally {
                    endLatch.countDown();
                }
            });
        }

        // Start all threads simultaneously

        generator.setCommandList(Collections.singletonList("echo test"));
        try {
            generator.generate("test_id", null);
            fail("Should throw exception for null output file");
        } catch (final Exception e) {
            assertTrue(true);
        }
    }

    public void test_generate_thumbnailId_null() throws Exception {
        final File outputFile = File.createTempFile("command_generator", ".out");

                }
            } catch (Exception e) {
                log.debug("Error releasing tree connection during emergency cleanup", e);
            }

            // Note: resourceLoc is final, cannot be set to null
            // Clear other mutable references would go here

        } catch (Exception e) {
            log.error("Failed to perform emergency tree handle cleanup", e);

                try {
                    return ni.isLoopback() || !ni.isUp() || ni.isVirtual();
                } catch (Exception e) {
                    return true;
                }
            });
            return interfaces;
        } catch (Exception e) {
            log.warn("Failed to get network interfaces: {}", e.getMessage());
            return Collections.emptyList();
        }

        } catch (final IOException ioe) {
            log.warn("sendrecv failed", ioe);
            try {
                disconnect(true);
            } catch (final IOException ioe2) {
                ioe.addSuppressed(ioe2);
                log.info("disconnect failed", ioe2);
            }
            throw ioe;
        } catch (final InterruptedException ie) {

                        } catch (Exception e) {
                            synchronized (exceptions) {
                                exceptions.add(e);
                            }
                        }
                    }
                    long threadEnd = System.nanoTime();
                    totalTime.addAndGet(threadEnd - threadStart);

                } catch (InterruptedException e) {

                int compressedSize = deflater.deflate(buffer);
                baos.write(buffer, 0, compressedSize);
            }

            deflater.end();
            return baos.toByteArray();
        } catch (Exception e) {
            throw new CIFSException("LZ77 compression failed", e);
        }
    }

    /**
     * Decompresses LZ77 data.
     */