An implementation of this interface is usually provided to another object
to allow this object to request an approval for actions. The list of
possible actions must be documented in documentation of the object.
a value specifying the action that should be approved. Could take
values from Actions constants set. The explicit set
of the actions should be documented by the object that is going
to use this interface for approval as for example
InstanceLocker does.
Returns
returns true in case the specified action is approved.
