/**
     * Creates a new empty DataStoreParams instance.
     * Initializes the internal parameter map with a ParamMap wrapper.
     */
    public DataStoreParams() {
        params = new ParamMap<>(new HashMap<>());
    }

    /**
     * Creates a new DataStoreParams instance with a copy of the provided parameters.
     * This protected constructor is used for creating new instances from existing parameter maps.
     *

            // Test that constructor is accessible when made accessible
            constructor.setAccessible(true);
            ThreadDumpUtil instance = constructor.newInstance();
            assertNotNull(instance);

        } catch (NoSuchMethodException | InstantiationException | IllegalAccessException | InvocationTargetException e) {

  assertEquals("/v1/chat/messages/3", request3.getUrl().encodedPath());

  // Shut down the server. Instances cannot be reused.
  server.close();
}
```

### Kotlin
```kotlin
fun test() {
  // Create a MockWebServer. These are lean enough that you can create a new
  // instance for every unit test.
  val server = MockWebServer()

  // Schedule some responses.

        }

        final String[] searchers = DocumentUtil.getValue(docMap, Constants.SEARCHER, String[].class);
        if (searchers != null) {
            docMap.put(Constants.SEARCHER, ArrayUtil.add(searchers, getName()));
        } else {
            docMap.put(Constants.SEARCHER, new String[] { getName() });
        }

        return docMap;
    }

func (m *MetricValues) setDriveIOStatMetrics(ioStats driveIOStatMetrics, labels []string) {
	m.Set(driveReadsPerSec, ioStats.readsPerSec, labels...)
	m.Set(driveReadsKBPerSec, ioStats.readsKBPerSec, labels...)
	if ioStats.readsPerSec > 0 {
		m.Set(driveReadsAwait, ioStats.readsAwait, labels...)
	}

	m.Set(driveWritesPerSec, ioStats.writesPerSec, labels...)
	m.Set(driveWritesKBPerSec, ioStats.writesKBPerSec, labels...)

    }
  }

  // Instance stuff here

  // The array is never mutated after storing in this field and the construction strategies ensure
  // it doesn't escape this class
  @SuppressWarnings("Immutable")
  private final long[] array;

  /*
   * TODO(kevinb): evaluate the trade-offs of going bimorphic to save these two fields from most

    }
  }

  // Instance stuff here

  // The array is never mutated after storing in this field and the construction strategies ensure
  // it doesn't escape this class
  @SuppressWarnings("Immutable")
  private final int[] array;

  /*
   * TODO(kevinb): evaluate the trade-offs of going bimorphic to save these two fields from most

    @Mock
    Configuration mockConfig;
    @Mock
    ServerMessageBlock mockAndX;
    @Mock
    CIFSContext mockContext;

    /**
     * Helper that creates a request instance with the supplied flags.
     * The other arguments are simple constants.
     */
    private SmbComNTCreateAndX createRequest(int flags, int createOptions) {

        this.pageNumberList = pageNumberList;
    }

    /**
     * Gets the default current page number from system constants.
     *
     * @return the default current page number
     */
    protected int getDefaultCurrentPageNumber() {
        return Constants.DEFAULT_ADMIN_PAGE_NUMBER;
    }

    /**
     * Gets the default page size from system configuration.
     *

        assertNull(exception.getCause());
    }

    public void test_instanceOfFessSystemException() {
        // Test that FessUserNotFoundException is an instance of FessSystemException
        FessUserNotFoundException exception = new FessUserNotFoundException("testuser");

        assertTrue(exception instanceof FessSystemException);