/** @brief Callback signal fired when a communication changes it state (ready/done/cancel) */
static xbt::signal<void(kernel::resource::NetworkAction&, kernel::resource::Action::State)>
on_communication_state_change;
/** @brief Callback signal fired when a communication changes it state (ready/done/cancel) */
static xbt::signal<void(kernel::resource::NetworkAction&, kernel::resource::Action::State)>
on_communication_state_change;