m[v] = strings.Join(value, ",")
			} else {
				m[supportedHeader] = strings.Join(value, ",")
			}
		}
	}

	for key := range v {
		for _, prefix := range userMetadataKeyPrefixes {
			if !stringsHasPrefixFold(key, prefix) {
				continue
			}
			value, ok := nv[http.CanonicalHeaderKey(key)]
			if ok {
				m[key] = strings.Join(value, ",")
				break
			}
		}
	}

		if file.Mode()&os.ModeSymlink == os.ModeSymlink {
			file, err = Stat(filepath.Join(root.Name(), file.Name()))
			if err != nil {
				// not accessible ignore
				continue
			}
			if !file.IsDir() {
				continue
			}
		}

		var (
			certFile = filepath.Join(root.Name(), file.Name(), publicCertFile)
			keyFile  = filepath.Join(root.Name(), file.Name(), privateKeyFile)
		)

                }
            });
        }

        for (Thread th : threads) {
            th.start();
        }
        for (Thread th : threads) {
            th.join();
        }
        assertEquals(num, count.get());
        assertEquals(num, valueSet.size());

        Set<String> valueSet2 = Collections.synchronizedSet(new HashSet<>());
        threads = new Thread[threadNum];

    assertThat(Doubles.join(",", EMPTY)).isEmpty();
    assertThat(Doubles.join(",", ARRAY1)).isEqualTo("1.0");
    assertThat(Doubles.join(",", 1.0, 2.0)).isEqualTo("1.0,2.0");
    assertThat(Doubles.join("", 1.0, 2.0, 3.0)).isEqualTo("1.02.03.0");
  }

  public void testJoinNonTrivialDoubles() {
    assertThat(Doubles.join(",", EMPTY)).isEmpty();
    assertThat(Doubles.join(",", 1.2)).isEqualTo("1.2");

  # Load first party dynamic kernels.
  _tf_dir = _os.path.dirname(_current_file_location)
  _kernel_dir = _os.path.join(_tf_dir, "core", "kernels")
  if _os.path.exists(_kernel_dir):
    _ll.load_library(_kernel_dir)

  # Load third party dynamic kernels.
  for _s in _site_packages_dirs:
    _plugin_dir = _os.path.join(_s, "tensorflow-plugins")
    if _os.path.exists(_plugin_dir):
      _ll.load_library(_plugin_dir)

    assertSame(defaultThread.getUncaughtExceptionHandler(), thread.getUncaughtExceptionHandler());

    assertFalse(completed);
    thread.start();
    thread.join();
    assertTrue(completed);

    // Creating a new thread from the same ThreadFactory will have the same
    // pool ID but a thread ID of 2.
    Thread thread2 = threadFactory.newThread(monitoredRunnable);

  }

  public void testJoin() {
    assertThat(Chars.join(",", EMPTY)).isEmpty();
    assertThat(Chars.join(",", '1')).isEqualTo("1");
    assertThat(Chars.join(",", '1', '2')).isEqualTo("1,2");
    assertThat(Chars.join("", '1', '2', '3')).isEqualTo("123");
  }

  public void testLexicographicalComparator() {
    List<char[]> ordered =

                response.writeBytesWireFormat(buffer2, 0);
            });

            thread1.start();
            thread2.start();
            thread1.join();
            thread2.join();

            // Then - no exceptions should occur
            assertTrue(true);
        }
    }

    assertThat(dispatcher.runningCalls())
      .containsExactlyInAnyOrder(a1, a2)
    assertThat(dispatcher.queuedCalls()).isEmpty()

    // Let the calls finish.
    waiting.countDown()
    t1.join()
    t2.join()

    // Now we should have 0 running calls and 0 queued calls.
    assertThat(dispatcher.runningCallsCount()).isEqualTo(0)
    assertThat(dispatcher.queuedCallsCount()).isEqualTo(0)

    <example>${fe:sdh(doc.similar_docs_hash)}</example>
  </function>

  <function>
    <description>Concatenate strings.</description>
    <name>join</name>
    <function-class>org.codelibs.fess.taglib.FessFunctions</function-class>
    <function-signature>java.lang.String join(java.lang.Object)</function-signature>
    <example>${fe:join(values)}</example>
  </function>

  <function>
    <description>