Imports k8s.io/api/core/v1 k8s.io/apimachinery/pkg/apis/meta/v1 k8s.io/apimachinery/pkg/runtime k8s.io/apimachinery/pkg/runtime/schema k8s.io/apimachinery/pkg/types knative.dev/pkg/apis/duck knative.dev/pkg/apis/duck/v1 github.com/rickb777/date/period knative.dev/pkg/apis Standard library imports context fmt