* existing values in the execution request that are controlled by the toolchains. Hence, it is expected that this
     * method is called on a new/empty execution request before the caller mutates it to fit its needs.
     *
     * @param request The execution request to populate, must not be {@code null}.
     * @param toolchains The toolchains to copy into the execution request, may be {@code null}.

   *
   * <p>This fit minimizes the root-mean-square error in {@code y} as a function of {@code x}. This
   * error is defined as the square root of the mean of the squares of the differences between the
   * actual {@code y} values of the data and the values predicted by the fit for the {@code x}

   *
   * <p>This fit minimizes the root-mean-square error in {@code y} as a function of {@code x}. This
   * error is defined as the square root of the mean of the squares of the differences between the
   * actual {@code y} values of the data and the values predicted by the fit for the {@code x}

        // Should have no more elements since all data fit in first message
        assertFalse(transaction.hasMoreElements(), "hasMoreElements should be false when all data is sent");
    }

    @Test
    @DisplayName("Test transaction with large data requires multiple elements")
    void testLargeDataMultipleElements() {
        // Set large amounts that won't fit in one buffer
        transaction.maxBufferSize = 100;

            // File access constants should fit in lower 16 bits (0x0000FFFF)
            assertTrue(ACE.FILE_READ_DATA <= 0x0000FFFF, "FILE_READ_DATA should fit in lower 16 bits");
            assertTrue(ACE.FILE_WRITE_DATA <= 0x0000FFFF, "FILE_WRITE_DATA should fit in lower 16 bits");
            assertTrue(ACE.FILE_WRITE_ATTRIBUTES <= 0x0000FFFF, "FILE_WRITE_ATTRIBUTES should fit in lower 16 bits");

     * this method should provide all changes (size of that buffer can be adjusted through
     * {@link jcifs.Configuration#getNotifyBufferSize()}).
     * If the server cannot fulfill the request because the changes did not fit the buffer
     * it will return an empty list of changes.
     *
     * @return changes since the last invocation
     * @throws CIFSException if an error occurs retrieving file notifications
     */

      PairedStats stats = createPairedStatsOf(values.asIterable(), OTHER_MANY_VALUES);
      LinearTransformation fit = stats.leastSquaresFit();
      if (values.hasAnyNonFinite()) {
        assertLinearTransformationNaN(fit);
      } else {
        assertDiagonalLinearTransformation(
            fit,
            stats.xStats().mean(),
            stats.yStats().mean(),
            stats.xStats().populationVariance(),

      PairedStats stats = createPairedStatsOf(values.asIterable(), OTHER_MANY_VALUES);
      LinearTransformation fit = stats.leastSquaresFit();
      if (values.hasAnyNonFinite()) {
        assertLinearTransformationNaN(fit);
      } else {
        assertDiagonalLinearTransformation(
            fit,
            stats.xStats().mean(),
            stats.yStats().mean(),
            stats.xStats().populationVariance(),

      LinearTransformation fit = accumulator.leastSquaresFit();
      LinearTransformation fitByAddAllPartitionedPairedStats =
          accumulatorByAddAllPartitionedPairedStats.leastSquaresFit();
      if (values.hasAnyNonFinite()) {
        assertLinearTransformationNaN(fit);
        assertLinearTransformationNaN(fitByAddAllPartitionedPairedStats);
      } else {

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