/** Returns a joiner which automatically places {@code separator} between consecutive elements. */
  public static Joiner on(String separator) {
    return new Joiner(separator);
  }

  /** Returns a joiner which automatically places {@code separator} between consecutive elements. */
  public static Joiner on(char separator) {
    return new Joiner(String.valueOf(separator));
  }

  private final String separator;

  /** Returns a joiner which automatically places {@code separator} between consecutive elements. */
  public static Joiner on(String separator) {
    return new Joiner(separator);
  }

  /** Returns a joiner which automatically places {@code separator} between consecutive elements. */
  public static Joiner on(char separator) {
    return new Joiner(String.valueOf(separator));
  }

  private final String separator;

                "WEB-INF" + File.separator + "lib" + File.separator);
        // WEB-INF/env/suggest/lib
        appendJarFile(cpSeparator, buf, new File(servletContext.getRealPath("/WEB-INF/env/" + getExecuteType() + "/lib")),
                "WEB-INF" + File.separator + "env" + File.separator + getExecuteType() + File.separator + "lib" + File.separator);
        // WEB-INF/plugin

                "WEB-INF" + File.separator + "lib" + File.separator);
        // WEB-INF/env/thumbnail/lib
        appendJarFile(cpSeparator, buf, new File(servletContext.getRealPath("/WEB-INF/env/" + getExecuteType() + "/lib")),
                "WEB-INF" + File.separator + "env" + File.separator + getExecuteType() + File.separator + "lib" + File.separator);
        // WEB-INF/plugin

    }

    // Test getPyFilePath method
    public void test_getPyFilePath() {
        pythonJob.filename("test_script.py");

        String expectedPath = "WEB-INF" + File.separator + "env" + File.separator + "python" + File.separator + "resources" + File.separator
                + "test_script.py";
        assertEquals(expectedPath, pythonJob.getPyFilePath());
    }

    // Test getPyFilePath with directory traversal attempt

                "WEB-INF" + File.separator + "lib" + File.separator);
        // WEB-INF/env/crawler/lib
        appendJarFile(cpSeparator, buf, new File(servletContext.getRealPath("/WEB-INF/env/" + getExecuteType() + "/lib")),
                "WEB-INF" + File.separator + "env" + File.separator + getExecuteType() + File.separator + "lib" + File.separator);
        // WEB-INF/plugin

			}
		case "Recursive":
			z.Recursive, err = dc.ReadBool()
			if err != nil {
				err = msgp.WrapError(err, "Recursive")
				return
			}
		case "Separator":
			z.Separator, err = dc.ReadString()
			if err != nil {
				err = msgp.WrapError(err, "Separator")
				return
			}
		case "Create":
			z.Create, err = dc.ReadBool()
			if err != nil {
				err = msgp.WrapError(err, "Create")
				return
			}

     *
     * @param str
     *            the string
     * @param separator
     *            the separator
     * @return the resulting string
     */
    public static String substringFromLast(final String str, final String separator) {
        if (isEmpty(str) || isEmpty(separator)) {
            return str;
        }

    testEncoding(encoding, decoded, encoded);

    // test separators work
    for (int sepLength = 3; sepLength <= 5; sepLength++) {
      for (String separator : ImmutableList.of(",", "\n", ";;", "")) {
        testEncoding(
            encoding.withSeparator(separator, sepLength),
            decoded,
            Joiner.on(separator).join(Splitter.fixedLength(sepLength).split(encoded)));
      }
    }
  }

func (e metaCacheEntry) isInDir(dir, separator string) bool {
	if len(dir) == 0 {
		// Root
		idx := strings.Index(e.name, separator)
		return idx == -1 || idx == len(e.name)-len(separator)
	}
	ext := strings.TrimPrefix(e.name, dir)
	if len(ext) != len(e.name) {
		idx := strings.Index(ext, separator)
		// If separator is not found or is last entry, ok.