READY,

    /** We haven't yet computed or have already returned the element. */
    NOT_READY,

    /** We have reached the end of the data and are finished. */
    DONE,

    /** We've suffered an exception and are kaput. */
    FAILED,
  }

  private @Nullable T next;

  /**
   * Returns the next element. <b>Note:</b> the implementation must call {@link #endOfData()} when

        for (int i = 8; i < 16; i++) {
            buffer[i] = (byte) (i * 2);
        }

        // Mock number of links (4 bytes)
        buffer[16] = 0x01;
        buffer[17] = 0x00;
        buffer[18] = 0x00;
        buffer[19] = 0x00;

        // Mock delete pending and directory flags
        buffer[20] = 0x00;
        buffer[21] = 0x00;

        return buffer;
    }

        assertEquals((byte) 0xEF, buffer[0]); // Little-endian
        assertEquals((byte) 0xCD, buffer[1]);
        assertEquals((byte) 0xAB, buffer[2]);
        assertEquals((byte) 0x89, buffer[3]);
        assertEquals((byte) 0x67, buffer[4]);
        assertEquals((byte) 0x45, buffer[5]);
        assertEquals((byte) 0x23, buffer[6]);
        assertEquals((byte) 0x01, buffer[7]);

        ndrBuffer.setIndex(0);

    // requireNonNull accommodates Android's @RecentlyNullable annotation on ThreadLocal.get
    return requireNonNull(DEST_TL.get());
  }

  /**
   * A thread-local destination buffer to keep us from creating new buffers. The starting size is
   * 1024 characters. If we grow past this we don't put it back in the threadlocal, we just keep
   * going and grow as needed.
   */
  private static final ThreadLocal<char[]> DEST_TL =

        SMBUtil.writeInt2(8, buffer, 58); // Security buffer length

        // Add some dummy security data at offset 64 from start
        buffer[64] = (byte) 0x4E; // NTLMSSP signature start
        buffer[65] = (byte) 0x54;
        buffer[66] = (byte) 0x4C;
        buffer[67] = (byte) 0x4D;
        buffer[68] = (byte) 0x53;
        buffer[69] = (byte) 0x53;

        buffer[offset + 2] = 0x00;
        buffer[offset + 3] = 0x00;
        buffer[offset + 4] = 0x00;
        buffer[offset + 5] = 0x00;
        buffer[offset + 6] = 0x00;
        buffer[offset + 7] = 0x01;
        // Sub-authority
        SMBUtil.writeInt4(0, buffer, offset + 8);
    }

    private void prepareDaclHeader(byte[] buffer, int offset, int aceCount) {
        buffer[offset] = 0x02; // revision

			if p.buf[bufIdx] == nil {
				// Reading first time on this disk, hence the buffer needs to be allocated.
				// Subsequent reads will reuse this buffer.
				p.buf[bufIdx] = make([]byte, p.shardSize)
			}
			// For the last shard, the shardsize might be less than previous shard sizes.
			// Hence the following statement ensures that the buffer size is reset to the right size.
			p.buf[bufIdx] = p.buf[bufIdx][:p.shardSize]

        // For GCM, last 4 bytes should contain incrementing counter
        ByteBuffer buffer1 = ByteBuffer.wrap(nonce1, 12, 4).order(java.nio.ByteOrder.LITTLE_ENDIAN);
        ByteBuffer buffer2 = ByteBuffer.wrap(nonce2, 12, 4).order(java.nio.ByteOrder.LITTLE_ENDIAN);
        int counter1 = buffer1.getInt();
        int counter2 = buffer2.getInt();

        assertEquals(counter1 + 1, counter2, "Counter should increment between nonces");

pkg bytes, method (*Buffer) ReadString(uint8) (string, error)
pkg bytes, method (*Buffer) Reset()
pkg bytes, method (*Buffer) String() string
pkg bytes, method (*Buffer) Truncate(int)
pkg bytes, method (*Buffer) UnreadByte() error
pkg bytes, method (*Buffer) UnreadRune() error
pkg bytes, method (*Buffer) Write([]uint8) (int, error)
pkg bytes, method (*Buffer) WriteByte(uint8) error
pkg bytes, method (*Buffer) WriteRune(int32) (int, error)

                    return buf;
                }, StringIndexOutOfBoundsException.class));
    }

    @ParameterizedTest(name = "{0}")
    @MethodSource("invalidBuffers")
    @DisplayName("Invalid buffers throw appropriate exceptions")
    void invalidInputsThrow(String name, Object bufferSupplierOrBytes, Class<? extends Throwable> expected) {
        // Arrange
        byte[] buf;