Resource selector for a subsequent seize/release.
select(.trj, resources, policy = c("shortest-queue", "round-robin",
"first-available", "random"), id = 0)the trajectory object.
one or more resource names, or a callable object (a function) which must return a resource name to select.
if resources is a vector of names, this parameter determines
the criteria for selecting a resource among the set of policies available; otherwise,
it is ignored.
selection identifier for nested usage.
Returns the trajectory object.
seize_selected, release_selected,
set_capacity_selected, set_queue_size_selected.