{* ../../docs_src/background_tasks/tutorial001.py hl[6:9] *}

## Add the background task { #add-the-background-task }

Inside of your *path operation function*, pass your task function to the *background tasks* object with the method `.add_task()`:

{* ../../docs_src/background_tasks/tutorial001.py hl[14] *}

`.add_task()` receives as arguments:

* A task function to be run in the background (`write_notification`).

        String[] results = relatedQueryHelper.getRelatedQueries("test");
        assertEquals(0, results.length);
    }

    public void test_toLowerCase_nullInput() {
        // Test private method indirectly through public methods
        List<RelatedQuery> testData = new ArrayList<>();
        testData.add(createRelatedQuery(null, new String[] { "query" }, ""));
        mockBhv.setTestData(testData);

    assertThat(index).isNotEqualTo(0);

    // Above our method should be the call to get(). Don't assert on the class
    // because it could be some superclass.
    assertThat(e.getStackTrace()[index - 1].getMethodName()).isEqualTo("get");
  }

  private static int findStackFrame(ExecutionException e, String clazz, String method) {
    StackTraceElement[] elements = e.getStackTrace();

            ci += NL_LENGTH;
        } while (si < length);

        ps.println(c);
    }

    /**
     * This is an alternative to the <code>java.lang.Integer.toHexString</code>
     * method. It is an efficient relative that also will pad the left side so
     * that the result is <code>size</code> digits.
     *
     * @param val the integer value to convert to hexadecimal

        if (pageSize > 0) {
            calculatePageInfo();
        }
    }

    /**
     * Calculates pagination information based on the current parameters.
     * This method computes page counts, navigation flags, record numbers, and page number lists.
     */
    protected void calculatePageInfo() {
        int startWithOffset = start - offset;
        if (startWithOffset < 0) {

        // Act
        long actual = getter.apply(e);
        // Assert
        assertEquals(value, actual, label);
    }

    @Test
    @DisplayName("Calling a method on null reference throws NPE")
    void nullReference_throwsNPE() {
        // Arrange
        FileEntry e = null;
        // Act & Assert: demonstrate invalid usage results in NPE

            assertEquals(mockCredentials, wrapper.getCredentials(), "Credentials should remain unchanged if no renewal mechanism succeeds");
            // Note: Credentials interface does not have renew() method
        }
    }

        int size = request.size();

        // Then
        // Size should be aligned to 8 bytes: SMB2_HEADER_LENGTH + 32
        int expectedSize = Smb2Constants.SMB2_HEADER_LENGTH + 32;
        // The size8 method aligns to 8-byte boundary
        int alignedSize = (expectedSize + 7) & ~7;
        assertEquals(alignedSize, size);
    }

    @Test
    @DisplayName("Should write correct bytes to wire format")

          <association>
            <type>RepositoryPolicy</type>
          </association>
        </field>
      </fields>
      <!-- prevent modello generation of an incorrect equals method. Could be avoided by using <identity/> tags to mark ID as the only identity field -->
      <codeSegments>
        <codeSegment>
          <version>1.0.0</version>
          <code><![CDATA[

     */
    public GroupPager() {
        // Default constructor
    }

    /**
     * Clears all pagination data and search criteria, resetting the pager to its initial state.
     * This method resets record counts, pagination flags, and search parameters to their default values.
     */
    public void clear() {
        allRecordCount = 0;
        allPageCount = 0;
        existPrePage = false;