Locates the first occurrence of the specified {@code value} in this
buffer. The search takes place from the specified {@code fromIndex}
(inclusive) to the specified {@code toIndex} (exclusive).
<p>
If {@code fromIndex} is greater than {@code toIndex}, the search is
performed in a reversed order.
<p>
This method does not modify {@code readerIndex} or {@code writerIndex} of
this buffer.
@return the absolute index of the first occurrence if found.
{@code -1} otherwise.
Locates the first occurrence of the specified {@code value} in this buffer. The search takes place from the specified {@code fromIndex} (inclusive) to the specified {@code toIndex} (exclusive). <p> If {@code fromIndex} is greater than {@code toIndex}, the search is performed in a reversed order. <p> This method does not modify {@code readerIndex} or {@code writerIndex} of this buffer.
@return the absolute index of the first occurrence if found. {@code -1} otherwise.