// https://golang.org/doc/go_spec.html#Assignability
// T and V must be both of Chan kind.
func specialChannelAssignability(T, V *abi.Type) bool {
	// Special case:
	// x is a bidirectional channel value, T is a channel type,
	// x's type V and T have identical element types,
	// and at least one of V or T is not a defined type.

import org.gradle.api.Action;
import org.gradle.internal.service.scopes.Scope;
import org.gradle.internal.service.scopes.ServiceScope;

/**
 * A {@code MessagingServer} allows the creation of multiple bi-directional uni-cast connections.
 */
@ServiceScope(Scope.Global.class)
public interface MessagingServer {
    /**
     * Creates an endpoint that peers can connect to. Assigns an arbitrary address.
     *

 */
package org.gradle.internal.remote;

import org.gradle.internal.service.scopes.Scope;
import org.gradle.internal.service.scopes.ServiceScope;

/**
 * A {@code MessagingClient} maintains a single bi-directional uni-cast object connection with some peer.
 */
@ServiceScope(Scope.Global.class)
public interface MessagingClient {
    /**
     * Creates a connection to the given address. Blocks until the connection has been established.

// match. The resulting match will always be either Und or a language with the
// same language and script as the requested language. It will not match
// languages for which there is understood to be mutual or one-directional
// intelligibility.
//
// A Match will indicate an Exact match if the language matches after
// canonicalization and High if the matched tag is a parent.
func NewInheritanceMatcher(t []language.Tag) *InheritanceMatcher {

		// Pods with Bidirectional propagation in non-privileged containers.
		return allErrs
	}

	privileged := container.SecurityContext != nil && container.SecurityContext.Privileged != nil && *container.SecurityContext.Privileged
	if *mountPropagation == core.MountPropagationBidirectional && !privileged {

</pre>

<p>
The optional <code>&lt;-</code> operator specifies the channel <i>direction</i>,
<i>send</i> or <i>receive</i>. If no direction is given, the channel is
<i>bidirectional</i>.
A channel may be constrained only to send or only to receive by
<a href="#Assignments">assignment</a> or
explicit <a href="#Conversions">conversion</a>.
</p>

<pre>

		// non-privileged container + None
		core.VolumeMount{Name: "foo", MountPath: "/foo", MountPropagation: &propagationNone},
		defaultContainer,
		false,
	}, {
		// error: implicitly non-privileged container + Bidirectional
		core.VolumeMount{Name: "foo", MountPath: "/foo", MountPropagation: &propagationBidirectional},
		defaultContainer,
		true,
	}, {
		// explicitly non-privileged container + no propagation

        // We check both directions to verify these candidates differ. If a.matches(b) but !b.matches(a), we still consider variants a and b to be matching.
        // This is because attribute schema compatibility rules can be directional, where for two attribute values x and y, x may be compatible with y
        // while y may not be compatible with x. We accept compatibility in either direction as sufficient for this method.

limitations under the License.
*/

package selectors

import (
	"fmt"
	"strings"
	"sync"

	pkglabels "k8s.io/apimachinery/pkg/labels"
)

// BiMultimap is an efficient, bi-directional mapping of object
// keys. Associations are created by putting keys with a selector.
type BiMultimap struct {
	mux sync.RWMutex

	// Objects.
	labeledObjects   map[Key]*labeledObject

	// Note that this mode is recursively applied to all mounts in the volume
	// ("rshared" in Linux terminology).
	MountPropagationBidirectional MountPropagationMode = "Bidirectional"
)

// RecursiveReadOnlyMode describes recursive-readonly mode.
type RecursiveReadOnlyMode string

const (
	// RecursiveReadOnlyDisabled disables recursive-readonly mode.