final int start = bufferIndex;

        this.totalParameterCount = SMBUtil.readInt2(buffer, bufferIndex);
        if (this.bufDataStart == 0) {
            this.bufDataStart = this.totalParameterCount;
        }
        bufferIndex += 2;
        this.totalDataCount = SMBUtil.readInt2(buffer, bufferIndex);
        bufferIndex += 4; // Reserved

        assertEquals(7, d.getDataCount(), "dataCount parsed");
        assertEquals(1, d.getSetupCount(), "setupCount parsed");
        // When bufDataStart was zero it should be set to totalParameterCount
        assertEquals(5, d.getBufferDataStart(), "bufDataStart inferred from totalParameterCount");
    }

    /**
     * Exercise readBytesWireFormat where both parameter and data are
     * copied in a single call.

    }

    @Test
    @DisplayName("Test bufDataStart initialization when zero")
    void testBufDataStartInitialization() throws Exception {
        byte[] buffer = new byte[100];
        int bufferIndex = 0;

        // Set bufDataStart to 0 initially
        Field bufDataStartField = response.getClass().getSuperclass().getSuperclass().getDeclaredField("bufDataStart");
        bufDataStartField.setAccessible(true);