// is only valid if the (first) result is false. The check parameter may be nil
// if assignableTo is invoked through an exported API call, i.e., when all
// methods have been type-checked.
func (x *operand) assignableTo(check *Checker, T Type, cause *string) (bool, Code) {
	if x.mode == invalid || !isValid(T) {
		return true, 0 // avoid spurious errors
	}

	origT := T
	V := Unalias(x.typ)
	T = Unalias(T)

// is only valid if the (first) result is false. The check parameter may be nil
// if assignableTo is invoked through an exported API call, i.e., when all
// methods have been type-checked.
func (x *operand) assignableTo(check *Checker, T Type, cause *string) (bool, Code) {
	if x.mode == invalid || !isValid(T) {
		return true, 0 // avoid spurious errors
	}

	origT := T
	V := Unalias(x.typ)
	T = Unalias(T)

import java.util.Map.Entry;
import java.util.NavigableMap;
import java.util.NoSuchElementException;
import java.util.Set;
import java.util.function.BiFunction;
import javax.annotation.CheckForNull;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * An implementation of {@code RangeMap} based on a {@code TreeMap}, supporting all optional
 * operations.
 *

// from the incoming type.
//
// If expanding is non-nil, it is the instance type currently being expanded.
// One of expanding or ctxt must be non-nil.
func (check *Checker) subst(pos token.Pos, typ Type, smap substMap, expanding *Named, ctxt *Context) Type {
	assert(expanding != nil || ctxt != nil)

	if smap.empty() {
		return typ
	}

	// common cases
	switch t := typ.(type) {

import java.util.Iterator;
import java.util.List;
import java.util.SortedSet;
import java.util.TreeSet;
import java.util.stream.Collector;
import javax.annotation.CheckForNull;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * GWT emulation of {@link com.google.common.collect.ImmutableSortedSet}.
 *
 * @author Hayward Chan
 */
@ElementTypesAreNonnullByDefault

				if istiodCert, err := s.getIstiodCertificate(nil); istiodCert == nil || err != nil {
					t.Errorf("Istiod failed to generate new DNS cert")
				}
			} else {
				if len(c.expCert) != 0 {
					if !checkCert(t, s, c.expCert, c.expKey) {
						t.Errorf("Istiod certificate does not match the expectation")
					}
				} else {
					if _, err := s.getIstiodCertificate(nil); err == nil {

import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.NoSuchElementException;
import java.util.Set;
import javax.annotation.CheckForNull;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * CompactHashSet is an implementation of a Set. All optional operations (adding and removing) are
 * supported. The elements can be any objects.
 *

import java.util.NoSuchElementException;
import java.util.Set;
import java.util.Spliterator;
import java.util.Spliterators;
import java.util.function.Consumer;
import javax.annotation.CheckForNull;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * CompactHashSet is an implementation of a Set. All optional operations (adding and removing) are
 * supported. The elements can be any objects.
 *

import com.google.common.annotations.GwtCompatible;
import com.google.errorprone.annotations.ForOverride;
import java.io.Serializable;
import javax.annotation.CheckForNull;
import org.checkerframework.checker.nullness.qual.NonNull;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * A strategy for determining whether two instances are considered equivalent, and for computing

// errors should be considered equivalent if there is a theoretical refactoring
// of the type checker in which they are emitted in exactly one place. For
// example, the type checker emits different error messages for "too many
// arguments" and "too few arguments", but one can imagine an alternative type
// checker where this check instead just emits a single "wrong number of
// arguments", so these errors should have the same code.
//