/**
 * Exception for plugin-related errors.
 */
public class PluginException extends FessSystemException {

    private static final long serialVersionUID = 1L;

    /**
     * Creates a plugin exception with message and cause.
     *
     * @param message the error message
     * @param cause the cause
     */
    public PluginException(final String message, final Throwable cause) {
        super(message, cause);

        PluginException exception = new PluginException(message, cause);

        assertNotNull(exception);
        assertEquals(message, exception.getMessage());
        assertEquals(cause, exception.getCause());
    }

    public void test_constructor_withNullMessage() {
        // Test constructor with null message
        PluginException exception = new PluginException(null);

            }
        };

        try {
            errorHelper.getAvailableArtifacts(ArtifactType.DATA_STORE);
            fail("Expected PluginException");
        } catch (PluginException e) {
            assertTrue(e.getMessage().contains("Failed to access"));
        }
    }

    public void test_getInstalledArtifacts_unknown() {

     * @return an array of available artifacts
     * @throws PluginException if failed to access the artifact repository
     */
    public Artifact[] getAvailableArtifacts(final ArtifactType artifactType) {
        try {
            return availableArtifacts.get(artifactType);
        } catch (final Exception e) {
            throw new PluginException("Failed to access " + artifactType, e);
        }
    }

    /**