You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: exit_code_propagation.go
    path of file: ./repos/podman/libpod/define
    
    the code of the file until where you have to start completion: package define

import "fmt"

// KubeExitCodePropagation defines an exit policy of kube workloads.
type KubeExitCodePropag
    
func (k KubeExitCodePropagation) String() string {
	switch k {
	case KubeExitCodePropagationNone:
		return strKubeECPNone
	case KubeExitCodePropagationAll:
		return strKubeECPAll
	case KubeExitCodePropagationAny:
		return strKubeECPAny
	case KubeExitCodePropagationInvalid:
		return strKubeECPInvalid
	default:
		return "unknown value"
	}
}