| context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| k8s.io/apiserver/pkg/admission | |
| k8s.io/kubernetes/pkg/apis/core | Package core contains the latest (or "internal") version of the Kubernetes API objects. |
| sync | Package sync provides basic synchronization primitives such as mutual exclusion locks. |