Function aeron_archive_persistent_subscription_context_get_start_position 

pub unsafe extern "C" fn aeron_archive_persistent_subscription_context_get_start_position(
    context: *mut aeron_archive_persistent_subscription_context_t,
) -> i64

Get the position to start the subscription from.

@param context to query. @return the start position. @see aeron_archive_persistent_subscription_context_set_start_position