final byte[] result = FileUtil.readBytes(emptyFile);
        assertThat(result.length, is(0));
    }

    /**
     * Test readBytes with null file throws exception
     */
    @Test
    public void testReadBytes_NullFile() {
        try {
            FileUtil.readBytes(null);
            fail("Expected IllegalArgumentException");

            readParams.setAccessible(true);
            readParams.invoke(cancel, buffer, 0);

            Method readBytes = SmbComNtCancel.class.getDeclaredMethod("readBytesWireFormat", byte[].class, int.class);
            readBytes.setAccessible(true);
            readBytes.invoke(cancel, buffer, 0);

            // Then - buffer should remain unchanged
            assertArrayEquals(originalBuffer, buffer);

                { getInputStream(jarEntry).use { jarInput -> jarInput.readBytes() } }
            }
        }
    }

    private
    fun directoryClassBytesIndexFor(dir: File): ClassBytesIndex = { classFilePath ->
        dir.resolve(classFilePath).takeIf { it.isFile }?.let { classFile -> { classFile.readBytes() } }
    }

    private

			z.LifecycleConfigXML, err = dc.ReadBytes(z.LifecycleConfigXML)
			if err != nil {
				err = msgp.WrapError(err, "LifecycleConfigXML")
				return
			}
		case "ObjectLockConfigXML":
			z.ObjectLockConfigXML, err = dc.ReadBytes(z.ObjectLockConfigXML)
			if err != nil {
				err = msgp.WrapError(err, "ObjectLockConfigXML")
				return
			}
		case "VersioningConfigXML":
			z.VersioningConfigXML, err = dc.ReadBytes(z.VersioningConfigXML)

  var commaFound = false
  loop@ while (!exhausted()) {
    when (this[0]) {
      ','.code.toByte() -> {
        // Consume ','.
        readByte()
        commaFound = true
      }

      ' '.code.toByte(), '\t'.code.toByte() -> {
        readByte()
        // Consume space or tab.
      }

      else -> break@loop
    }
  }
  return commaFound
}

              readBytesDelivered = readBuffer.read(sink, minOf(byteCount, readBuffer.size))
              readBytes.update(total = readBytesDelivered)

              val unacknowledgedBytesRead = readBytes.unacknowledged
              if (errorExceptionToDeliver == null &&
                unacknowledgedBytesRead >= connection.okHttpSettings.initialWindowSize / 2
              ) {

    // Read the command.
    val version = fromSource.readByte() and 0xff
    if (version != VERSION_5) throw ProtocolException("unexpected version: $version")

    val command = fromSource.readByte() and 0xff

    val reserved = fromSource.readByte() and 0xff
    if (reserved != 0) throw ProtocolException("unexpected reserved: $reserved")

    val addressType = fromSource.readByte() and 0xff
    val toAddress =

          }

          var lengthBits = source.readByte().toLong() and 0xff
          if (lengthBits == 0L || lengthBytes == 1 && lengthBits and 0b1000_0000 == 0L) {
            throw ProtocolException("invalid encoding for length")
          }

          for (i in 1 until lengthBytes) {
            lengthBits = lengthBits shl 8
            lengthBits += source.readByte().toInt() and 0xff
          }

        byte[] data = new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05 };
        PacDataInputStream pdis = createInputStream(data);
        pdis.readByte(); // position is 1
        pdis.align(4);
        assertEquals(1, pdis.available());
        assertEquals(0x05, pdis.readByte());

        // Test no alignment needed
        pdis = createInputStream(new byte[] { 0x01, 0x02, 0x03, 0x04 });
        pdis.readInt(); // position is 4

  fun writeObjectIdentifier(s: String) {
    val utf8 = Buffer().writeUtf8(s)
    val v1 = utf8.readDecimalLong()
    require(utf8.readByte() == '.'.code.toByte())
    val v2 = utf8.readDecimalLong()
    writeVariableLengthLong(v1 * 40 + v2)

    while (!utf8.exhausted()) {
      require(utf8.readByte() == '.'.code.toByte())
      val vN = utf8.readDecimalLong()
      writeVariableLengthLong(vN)
    }
  }