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.
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.