public interface Lookup extends Service {
    /**
     * Performs a lookup for given typed component.
     *
     * @param type The component type.
     * @return The component.
     * @param <T> The component type.
     * @throws LookupException if no such component or there is some provisioning related issue.
     */
    @Nonnull
    <T> T lookup(Class<T> type);

    /**

	}
	u := *cache.u // copy
	return &u, nil
}

// cache of the current user
var cache struct {
	sync.Once
	u   *User
	err error
}

// Lookup looks up a user by username. If the user cannot be found, the
// returned error is of type [UnknownUserError].
func Lookup(username string) (*User, error) {
	if u, err := Current(); err == nil && u.Username == username {
		return u, err
	}
	return lookupUser(username)
}

// Code generated by "go test -run=Generate -write=all"; DO NOT EDIT.
// Source: ../../cmd/compile/internal/types2/lookup.go

// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// This file implements various field and method lookup functions.

package types

import (
	"bytes"
	"go/token"
)

// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// This file implements various field and method lookup functions.

package types2

import (
	"bytes"
	"cmd/compile/internal/syntax"
)

// Internal use of LookupFieldOrMethod: If the obj result is a method
// associated with a concrete (non-interface) type, the method's signature

	}
	return ret, nil
}

// onlyValuesCtx is a context that uses an underlying context
// for value lookup if the underlying context hasn't yet expired.
type onlyValuesCtx struct {
	context.Context
	lookupValues context.Context
}

var _ context.Context = (*onlyValuesCtx)(nil)

// Value performs a lookup if the original context hasn't expired.
func (ovc *onlyValuesCtx) Value(key any) any {
	select {

Jonathan Amsterdam <******@****.***> 1700059801 -0500

apiVersion: release-notes/v2
kind: bug-fix
area: installation
releaseNotes:
  - |

// will attempt to resolve imports in the $GOPATH workspace.
func ForCompiler(fset *token.FileSet, compiler string, lookup Lookup) types.Importer {
	switch compiler {
	case "gc":
		return &gcimports{
			fset:     fset,
			packages: make(map[string]*types.Package),
			lookup:   lookup,
		}

	case "gccgo":
		var inst gccgoimporter.GccgoInstallation

            try {
                // Lookup.defineClass can only define a class into same classloader as the lookup object.
                // We have to use the fallback defineClass() if they're not same, which is the case of ManagedProxyClassGenerator
                if (decoratedClass.getClassLoader() == classLoader) {
                    MethodHandles.Lookup lookup = MethodHandles.privateLookupIn(decoratedClass, baseLookup);

      )
    }

    var result = cachedDns.lookup("google.com")
    assertThat(result).containsExactly(address("157.240.1.18"))
    var recordedRequest = server.takeRequest()
    assertThat(recordedRequest.method).isEqualTo("GET")
    assertThat(recordedRequest.path)
      .isEqualTo("/lookup?ct&dns=AAABAAABAAAAAAAABmdvb2dsZQNjb20AAAEAAQ")

    result = cachedDns.lookup("google.com")