injectLabel := `sidecar.istio.io/inject: "true"`
			if len(t.Settings().Revisions.Default()) > 0 {
				injectLabel = fmt.Sprintf(`istio.io/rev: "%v"`, t.Settings().Revisions.Default())
			}

			templateParams := map[string]string{
				"imagePullSecret": t.Settings().Image.PullSecret,
				"injectLabel":     injectLabel,
				"imagePullPolicy": t.Settings().Image.PullPolicy,
			}

final class InjectUtil {

    /**
     * Selects the single injectable constructor for the given type.
     * The type must either have only one public or package-private default constructor,
     * or it should have a single non-private constructor annotated with {@literal @}{@link Inject}.
     *
     * @param type the type to find the injectable constructor of.
     */

package nfacct

import (
	"github.com/vishvananda/netlink/nl"
	"github.com/vishvananda/netns"
	"golang.org/x/sys/unix"
)

// handler is an injectable interface for creating netlink request.
type handler interface {
	newRequest(cmd int, flags uint16) request
}

// request is an injectable interface representing a netlink request.
type request interface {
	Serialize() []byte
	AddData(data nl.NetlinkRequestData)
	AddRawData(data []byte)

import java.util.List;

class InjectUtil {
    /**
     * Selects the single injectable constructor for the given type.
     * The type must either have only one public or package-private default constructor,
     * or it should have a single constructor annotated with {@literal @}{@link Inject}.
     *
     * @param type the type to find the injectable constructor of.

limitations under the License.
*/

package nfacct

// Counter represents a nfacct accounting object.
type Counter struct {
	Name    string
	Packets uint64
	Bytes   uint64
}

// Interface is an injectable interface for running nfacct commands.
type Interface interface {
	// Ensure checks the existence of a nfacct counter with the provided name and creates it if absent.
	Ensure(name string) error

See the License for the specific language governing permissions and
limitations under the License.
*/

package ipvs

import (
	"net"
	"strconv"
	"strings"
	"time"
)

// Interface is an injectable interface for running ipvs commands.  Implementations must be goroutine-safe.
type Interface interface {
	// Flush clears all virtual servers in system. return occurred error immediately.
	Flush() error

        fails 'producer'

        then:
        failureCauseContains "Property 'text' cannot carry a dependency on task ':producer' as these are not yet supported."
    }

    def '#scriptTarget action can use injectable #simpleServiceTypeName'() {
        given:
        groovyFile scriptTarget.fileName, """
            import org.gradle.api.flow.*

            class FlowActionInjectionPlugin implements Plugin<$targetType> {

	return &operationGenerator{
		recorder: recorder,
	}
}

// OperationGenerator interface that extracts out the functions from operation_executor to make it dependency injectable
type OperationGenerator interface {
	// Generates the RegisterPlugin function needed to perform the registration of a plugin
	GenerateRegisterPluginFunc(
		socketPath string,
		timestamp time.Time,

通过依赖注入系统，只要告诉 **FastAPI** *路径操作函数* 还要「依赖」其他在*路径操作函数*之前执行的内容，**FastAPI** 就会执行函数代码，并「注入」函数返回的结果。

其他与「依赖注入」概念相同的术语为：

* 资源（Resource）
* 提供方（Provider）
* 服务（Service）
* 可注入（Injectable）
* 组件（Component）

## **FastAPI** 插件

**依赖注入**系统支持构建集成和「插件」。但实际上，FastAPI 根本**不需要创建「插件」**，因为使用依赖项可以声明不限数量的、可用于*路径操作函数*的集成与交互。

创建依赖项非常简单、直观，并且还支持导入 Python 包。毫不夸张地说，只要几行代码就可以把需要的 Python 包与 API 函数集成在一起。