Gets an unsigned 24-bit medium integer at the current {@code readerIndex}
in the Little Endian Byte Order and increases the {@code readerIndex}
by {@code 3} in this buffer.
@throws IndexOutOfBoundsException
if {@code this.readableBytes} is less than {@code 3}
Gets an unsigned 24-bit medium integer at the current {@code readerIndex} in the Little Endian Byte Order and increases the {@code readerIndex} by {@code 3} in this buffer.
@throws IndexOutOfBoundsException if {@code this.readableBytes} is less than {@code 3}