void testJoinWithNoElements() {
        String result = StringUtil.join(",");
        assertEquals("", result);
    }

    @Test
    @DisplayName("Should handle special characters in delimiter")
    void testJoinWithSpecialCharDelimiter() {
        String result = StringUtil.join("\\t", "tab", "separated", "values");
        assertEquals("tab\\tseparated\\tvalues", result);
    }

  }

  /*
   * To avoid the need to call requireNonNull so much, we could consider more clever approaches,
   * such as:
   *
   * - Make checkOpen return the non-null `seq`. Then callers can assign that to a local variable or
   *   even back to `this.seq`. However, that may suggest that we're defending against concurrent
   *   mutation, which is not an actual risk because we use `synchronized`.

                memoryRegister = null;
                valid = false;
            }
        }
    }

    @Override
    protected int generateLocalKey() {
        // In real implementation, this would get the local key from DiSNI:
        // return memoryRegister.getLkey();
        return keyGenerator.getAndIncrement();
    }

    @Override
    protected int generateRemoteKey() {

    private static Stream<Arguments> hostnamesProvider() {
        return Stream.of(Arguments.of("localhost", "127.0.0.1", "LOCALHOST"), Arguments.of("mycomputer.local", "mycomputer", "MYCOMPUTER"),
                Arguments.of("mycomputer.example.com", "mycomputer", "MYCOMPUTER"));
    }

    /* ---------------------------------------------------------------------

	Source     BatchJobReplicateSource `yaml:"source" json:"source"`

	clnt *miniogo.Core `msg:"-"`
}

// RemoteToLocal returns true if source is remote and target is local
func (r BatchJobReplicateV1) RemoteToLocal() bool {
	return !r.Source.Creds.Empty()

    <!-- Checks that all java files have a package declaration and that it
      lines up with the directory structure. -->
    <module name="PackageDeclaration" />

    <!-- Checks that a local variable or a parameter does not shadow a field that is defined in the same class. -->
    <!-- Disabled until existing violations are fixed -->
    <!--
    <module name="HiddenField">

## Major Themes

Kubernetes is developed by community members whose work is organized into
[Special Interest Groups][]. For the 1.8 release, each SIG provides the
themes that guided their work.

[Special Interest Groups]: https://github.com/kubernetes/community/blob/master/sig-list.md

### SIG API Machinery

	if config == nil {
		return nil
	}

	config.RLock()
	defer config.RUnlock()

	var tierCfgs []madmin.TierConfig
	for _, tier := range config.Tiers {
		// This makes a local copy of tier config before
		// passing a reference to it.
		tier := tier.Clone()
		tierCfgs = append(tierCfgs, tier)
	}
	return tierCfgs
}

            return replaceWithUnderscores(value);
        }
        return value;
    }

    /**
     * Replaces special characters in a string with underscores for group names.
     *
     * @param value the string to process
     * @return the string with special characters replaced by underscores
     */
    protected String replaceWithUnderscores(final String value) {

    }

    @Test
    public void test_htmlContent_withSpecialCharacters() {
        final ChatMessage message = new ChatMessage();
        final String htmlContent = "<p>Special chars: &amp; &lt; &gt; &quot;</p>";

        message.setHtmlContent(htmlContent);

        assertEquals(htmlContent, message.getHtmlContent());
    }

    @Test