Fills this buffer with <tt>NUL (0x00)</tt> starting at the specified
absolute {@code index}.
This method does not modify {@code readerIndex} or {@code writerIndex} of
this buffer.
@param length the number of <tt>NUL</tt>s to write to the buffer
@throws IndexOutOfBoundsException
if the specified {@code index} is less than {@code 0} or
if {@code index + length} is greater than {@code this.capacity}
Fills this buffer with <tt>NUL (0x00)</tt> starting at the specified absolute {@code index}. This method does not modify {@code readerIndex} or {@code writerIndex} of this buffer.
@param length the number of <tt>NUL</tt>s to write to the buffer
@throws IndexOutOfBoundsException if the specified {@code index} is less than {@code 0} or if {@code index + length} is greater than {@code this.capacity}