Context is a domain-refined description of the "problem"
that a task a task (and perhaps other plan elements) are
related to when there may be multiple such problems competing
for resources within a single logplan.
A Context must be Serializable and will be both persisted and
transferred between agents. Instances should be small and
relatively self-contained.
Example: in the COUGAAR domain, the Context of a task will
be an object which describes zero or more OPlans (e.g. their
UIDs or Names).
See Also:org.cougaar.planning.ldm.plan.Task