Merge pull request #61149 from hanxiaoshuai/fixtodo0314

Automatic merge from submit-queue (batch tested with PRs 61087, 61075, 61213, 61149, 60826). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

remove unnecessary TODOs in meta.go

**What this PR does / why we need it**:
I notice there are TODOs in apimachinery\pkg\api\meta\meta.go,return bool instead of error func CommonAccessor, ListAccessor, Accessor. If is it necessary to do,I push a PR for it.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #
[#61153](https://github.com/kubernetes/kubernetes/issues/61153)
**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```
This commit is contained in:
Kubernetes Submit Queue 2018-03-21 06:41:33 -07:00 committed by GitHub
commit f4398293a7
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@ -38,7 +38,6 @@ var errNotCommon = fmt.Errorf("object does not implement the common interface fo
// CommonAccessor returns a Common interface for the provided object or an error if the object does
// not provide List.
// TODO: return bool instead of error
func CommonAccessor(obj interface{}) (metav1.Common, error) {
switch t := obj.(type) {
case List:
@ -71,7 +70,6 @@ func CommonAccessor(obj interface{}) (metav1.Common, error) {
// not provide List.
// IMPORTANT: Objects are NOT a superset of lists. Do not use this check to determine whether an
// object *is* a List.
// TODO: return bool instead of error
func ListAccessor(obj interface{}) (List, error) {
switch t := obj.(type) {
case List:
@ -101,7 +99,6 @@ var errNotObject = fmt.Errorf("object does not implement the Object interfaces")
// obj must be a pointer to an API type. An error is returned if the minimum
// required fields are missing. Fields that are not required return the default
// value and are a no-op if set.
// TODO: return bool instead of error
func Accessor(obj interface{}) (metav1.Object, error) {
switch t := obj.(type) {
case metav1.Object: