The tf.WhileRegion op represents a while loop using 2 regions and a set of
  iteration variables. The iteration variables maintained by this Op have the
  same types as the inputs. The Op executes a while loop described by the
  following pseudo code:

  ```
     func WhileRegionOp(inputs) {
       iteration_vars = inputs;
       while (cond(iteration_vars)) {
           iteration_vars = body(iteration_vars);
       }

		return
	}

	// Helper containing boilerplate common to starting all types of containers.
	// typeName is a description used to describe this type of container in log messages,
	// currently: "container", "init container" or "ephemeral container"
	// metricLabel is the label used to describe this type of container in monitoring metrics.
	// currently: "container", "init_container" or "ephemeral_container"

 *
 * <li>Calling {@link #addProvider(ServiceRegistrationProvider)} to register a service provider bean. A provider bean may have factory, decorator and configuration methods as described below.</li>
 *
 * <li>Adding a factory method. A factory method should be annotated with {@literal @}{@link Provides}, have a name that starts with 'create', and have a non-void return type.

//
// mheap_.lock must be held or the world must be stopped.
func gcPaceScavenger(memoryLimit int64, heapGoal, lastHeapGoal uint64) {
	assertWorldStoppedOrLockHeld(&mheap_.lock)

	// As described at the top of this file, there are two scavenge goals here: one
	// for gcPercent and one for memoryLimit. Let's handle the latter first because
	// it's simpler.

	// stubs. The call stubs need to live in .text, which is why we
	// need to do this pass this early.

	// Reserve PLT entry and generate symbol resolver
	addpltsym(ctxt, ldr, r.Sym())

	// The stub types are described in gencallstub.
	stubType := 0
	stubTypeStr := ""

	// For now, the choice of call stub type is determined by whether
	// the caller maintains a TOC pointer in R2. A TOC pointer implies

		pbover.To.SetTarget(p)

	case ssa.OpPPC64CLRLSLWI:
		r := v.Reg()
		r1 := v.Args[0].Reg()
		shifts := v.AuxInt
		p := s.Prog(v.Op.Asm())
		// clrlslwi ra,rs,mb,sh will become rlwinm ra,rs,sh,mb-sh,31-sh as described in ISA
		p.From = obj.Addr{Type: obj.TYPE_CONST, Offset: ssa.GetPPC64Shiftmb(shifts)}
		p.AddRestSourceConst(ssa.GetPPC64Shiftsh(shifts))
		p.Reg = r1
		p.To.Type = obj.TYPE_REG
		p.To.Reg = r

                            module("org.springframework:spring-platform:1.0") // This is not good practice, but we keep this to describe the current behavior.
                            constraint("org.apache.groovy:core:2.5")
                            constraint("org.apache.groovy:json:2.5")
                            constraint("org.apache.groovy:xml:2.5")

	// deleting a terminating static pod from the apiserver before the pod is shut
	// down.
	IsPodForMirrorPodTerminatingByFullName(podFullname string) bool
}

// podSyncer describes the core lifecyle operations of the pod state machine. A pod is first
// synced until it naturally reaches termination (true is returned) or an external agent decides

	isWaypoint bool

	// allow service attached policy for to-service chains
	// currently only used for waypoints
	policySvc *model.Service
}

// filterChainOpts describes a filter chain: a set of filters with the same TLS context
type filterChainOpts struct {
	// Matching criteria. Will eventually turn into FilterChainMatch
	sniHosts             []string
	destinationCIDRs     []string

// backedge predicate.  This is conservatively correct.

namespace tensorflow {

namespace {

using tsl::StatusOr;

// Represents a logical predicate, used as described in the algorithm overview
// above.
class Predicate {
 public:
  enum class Kind { kAnd, kOr, kNot, kAndRecurrence, kSymbol, kIntSymbol };

  virtual string ToString() const = 0;