Returns the primitive array that backs this buffer if one exists and the
buffer is not read-only. The caller should have checked the {@link #hasArray()}
method before calling this method.
@return the array that backs this buffer is available.
@throws UnsupportedOperationException if this {@link ReadableBuffer} doesn't support array access.
@throws ReadOnlyBufferException if the ReadableBuffer is read-only.
Returns the primitive array that backs this buffer if one exists and the buffer is not read-only. The caller should have checked the {@link #hasArray()} method before calling this method.
@return the array that backs this buffer is available.
@throws UnsupportedOperationException if this {@link ReadableBuffer} doesn't support array access. @throws ReadOnlyBufferException if the ReadableBuffer is read-only.