Merge "Remove the comment about the return value of IContextHub.createSession." into main

     *         (nullable). Null indicates a fully custom marshalling scheme. The value should match

     *         a published descriptor for both destination and initiator.

     *

     * @return An integer identifying the session, the integer can be used to present

     *         the tuple of (destination, initiator, serviceDescriptor).

     *

     * @throws EX_ILLEGAL_ARGUMENT if any of the arguments are invalid, or the combination of the

     *         arguments is invalid.

     * @throws EX_SERVICE_SPECIFIC on other errors