Bytes.newFromBytes

Creates a #GBytes which is a subsection of another #GBytes. The offset + length may not be longer than the size of bytes.

A reference to bytes will be held by the newly created #GBytes until the byte data is no longer needed.

Since 2.56, if offset is 0 and length matches the size of bytes, then bytes will be returned with the reference count incremented by 1. If bytes is a slice of another #GBytes, then the resulting #GBytes will reference the same #GBytes instead of bytes. This allows consumers to simplify the usage of #GBytes when asynchronously writing to streams.