Rename IsEmpty to Empty

Signed-off-by: Kara Alexandra <kalexandra@us.ibm.com>

pkg/api/unversioned/group_version.go

@@ -50,7 +50,7 @@ func (gr GroupResource) WithVersion(version string) GroupVersionResource {
 	return GroupVersionResource{Group: gr.Group, Version: version, Resource: gr.Resource}
 }
 
-func (gr GroupResource) IsEmpty() bool {
+func (gr GroupResource) Empty() bool {
 	return len(gr.Group) == 0 && len(gr.Resource) == 0
 }
 
@@ -81,7 +81,7 @@ type GroupVersionResource struct {
 	Resource string `protobuf:"bytes,3,opt,name=resource"`
 }
 
-func (gvr GroupVersionResource) IsEmpty() bool {
+func (gvr GroupVersionResource) Empty() bool {
 	return len(gvr.Group) == 0 && len(gvr.Version) == 0 && len(gvr.Resource) == 0
 }
 
@@ -106,7 +106,7 @@ type GroupKind struct {
 	Kind  string `protobuf:"bytes,2,opt,name=kind"`
 }
 
-func (gk GroupKind) IsEmpty() bool {
+func (gk GroupKind) Empty() bool {
 	return len(gk.Group) == 0 && len(gk.Kind) == 0
 }
 
@@ -131,8 +131,8 @@ type GroupVersionKind struct {
 	Kind    string `protobuf:"bytes,3,opt,name=kind"`
 }
 
-// IsEmpty returns true if group, version, and kind are empty
-func (gvk GroupVersionKind) IsEmpty() bool {
+// Empty returns true if group, version, and kind are empty
+func (gvk GroupVersionKind) Empty() bool {
 	return len(gvk.Group) == 0 && len(gvk.Version) == 0 && len(gvk.Kind) == 0
 }
 
@@ -156,8 +156,8 @@ type GroupVersion struct {
 	Version string `protobuf:"bytes,2,opt,name=version"`
 }
 
-// IsEmpty returns true if group and version are empty
-func (gv GroupVersion) IsEmpty() bool {
+// Empty returns true if group and version are empty
+func (gv GroupVersion) Empty() bool {
 	return len(gv.Group) == 0 && len(gv.Version) == 0
 }
 
@@ -165,7 +165,7 @@ func (gv GroupVersion) IsEmpty() bool {
 // it returns "v1".
 func (gv GroupVersion) String() string {
 	// special case the internal apiVersion for the legacy kube types
-	if gv.IsEmpty() {
+	if gv.Empty() {
 		return ""
 	}