+- :cpp:member:`CommImpl::on_start <simgrid::kernel::actiivty::CommImpl::on_start>`
+ :cpp:member:`CommImpl::on_completion <simgrid::kernel::activity::CommImpl::on_completion>`
+- :cpp:member:`Disk::on_creation <simgrid::s4u::Disk::on_creation>`
+ :cpp:member:`Disk::on_destruction <simgrid::s4u::Disk::on_destruction>`
+ :cpp:member:`Disk::on_state_change <simgrid::s4u::Disk::on_state_change>`