code: public boolean expireAllLeasesByVMId(String vmId) throws IllegalStateException {
          final String hostname = assignableVMs.getHostnameFromVMId(vmId);
          if (hostname == null) {
              return false;
          }
          expireAllLeases(hostname);
          return true;
      }
docs: Call this method to instruct the task scheduler to reject all of the unused offers it is currently
  holding that concern resources offered by the host with the ID, {@code vmId}.
  
  @param vmId the ID of the host whose leases you want to expire
  @return {@code true} if the given ID matches a known host, {@code false} otherwise.
  @throws IllegalStateException if the scheduler is shutdown via the {@link #isShutdown} method.