func (m *ftpMetrics) log(s *ftp.Context, paths ...string) func(sz int64, err error) {
	startTime := time.Now()
	source := getSource(2)
	return func(sz int64, err error) {
		globalTrace.Publish(ftpTrace(s, startTime, source, strings.Join(paths, " "), err, sz))
	}
}

// Stat implements ftpDriver
func (driver *ftpDriver) Stat(ctx *ftp.Context, objPath string) (fi os.FileInfo, err error) {
	stopFn := globalFtpMetrics.log(ctx, objPath)

            // Start all threads
            for (Thread t : threads) {
                t.start();
            }

            // Wait for completion
            for (Thread t : threads) {
                t.join();
            }

            // Verify thread safety - no unexpected exceptions
            assertEquals(0, exceptionCount.get(), "Should not have unexpected exceptions");

                }
            });
            threads[i].start();
        }

        // Wait for all threads to complete
        for (Thread thread : threads) {
            thread.join();
        }

        // Then - no exceptions should have been thrown
        assertTrue(true); // If we reach here, no exceptions occurred
    }

    /**
     * Test consistency across multiple calls

            }

            // When
            for (Thread thread : threads) {
                thread.start();
            }
            for (Thread thread : threads) {
                thread.join();
            }

            // Then
            for (int i = 0; i < threadCount; i++) {
                assertTrue(success[i], "Thread " + i + " failed");
            }
        }

        @Test

        }

        request.getParameterMap().entrySet().stream().forEach(entry -> {
            if (entry.getValue().length > 1) {
                curlRequest.param(entry.getKey(), String.join(",", entry.getValue()));
            } else if (entry.getValue().length == 1) {
                curlRequest.param(entry.getKey(), entry.getValue()[0]);
            }
        });

func signV4TrimAll(input string) string {
	// Compress adjacent spaces (a space is determined by
	// unicode.IsSpace() internally here) to one space and return
	return strings.Join(strings.Fields(input), " ")
}

// checkMetaHeaders will check if the metadata from header/url is the same with the one from signed headers
func checkMetaHeaders(signedHeadersMap http.Header, r *http.Request) APIErrorCode {

   * For example, {@code join("-", '1', '2', '3')} returns the string {@code "1-2-3"}.
   *
   * @param separator the text that should appear between consecutive values in the resulting string
   *     (but not at the start or end)
   * @param array an array of {@code char} values, possibly empty
   */
  public static String join(String separator, char... array) {
    checkNotNull(separator);

  }

  /**
   * Returns a string containing the supplied {@code float} values, converted to strings as
   * specified by {@link Float#toString(float)}, and separated by {@code separator}. For example,
   * {@code join("-", 1.0f, 2.0f, 3.0f)} returns the string {@code "1.0-2.0-3.0"}.
   *
   * <p>Note that {@link Float#toString(float)} formats {@code float} differently in GWT. In the
   * previous example, it returns the string {@code "1-2-3"}.

   * example, {@code join("-", 1, 2, 3)} returns the string {@code "1-2-3"}.
   *
   * @param separator the text that should appear between consecutive values in the resulting string
   *     (but not at the start or end)
   * @param array an array of {@code int} values, possibly empty
   */
  public static String join(String separator, int... array) {
    checkNotNull(separator);

            // Complete the operation
            holdLatch.countDown();
            completeLatch.await();
            longRunningThread.join();

            assertEquals(0, cbWithTracking.getActiveRequests(), "Active requests should be 0 after completion");

        } finally {
            cbWithTracking.close();
        }
    }

    @Test