return nil, err
	}

	x, err := newExtensions(s)
	if err != nil {
		return nil, err
	}

	vx, err := newValidationExtensions(s)
	if err != nil {
		return nil, err
	}

	ss := &Structural{
		Generic:              *g,
		Extensions:           *x,
		ValueValidation:      vv,
		ValidationExtensions: *vx,
	}

	if s.Items != nil {
		if len(s.Items.JSONSchemas) > 0 {
			// we validate that it is not an array

```sh
UPDATE_COMPATIBILITY_FIXTURE_DATA=true go test k8s.io/api -run //HEAD
```

## Previous versions

The vX.Y.Z subdirectories contain serialized API objects from previous releases:

```
vX.Y.Z/
  <group>.<version>.<kind>.[json|yaml|pb]
```

All three formats of a given group/version/kind are expected to decode successfully to identical objects,

func (r *YAMLCmpReporter) Report(rs cmp.Result) {
	if !rs.Equal() {
		vx, vy := r.path.Last().Values()
		var dm string
		isNonEmptyX := isValidAndNonEmpty(vx)
		isNonEmptyY := isValidAndNonEmpty(vy)
		if isNonEmptyX && !isNonEmptyY {
			dm = fmt.Sprintf("%v -> <empty> (REMOVED)", vx)
		} else if !isNonEmptyX && isNonEmptyY {
			dm = fmt.Sprintf("<empty> -> %v (ADDED)", vy)

	{as: AVOR, a1: C_VREG, a2: C_VREG, a6: C_VREG, type_: 82, size: 4},  /* vector or, vx-form */

	/* Vector add */
	{as: AVADDUM, a1: C_VREG, a2: C_VREG, a6: C_VREG, type_: 82, size: 4},            /* vector add unsigned modulo, vx-form */
	{as: AVADDCU, a1: C_VREG, a2: C_VREG, a6: C_VREG, type_: 82, size: 4},            /* vector add & write carry unsigned, vx-form */

#        "dirty" indicates source code changes after the git commit id
#        "archive" indicates the tree was produced by 'git archive'
#    KUBE_GIT_VERSION - "vX.Y" used to indicate the last release version.
#    KUBE_GIT_MAJOR - The major part of the version
#    KUBE_GIT_MINOR - The minor component of the version

# Grovels through git to set a set of env variables.
#

	// if H == 0 or H^P == 0 then ret=1 else ret=0
	// clobbers T1H and T1L
	MOVD   $0, ISZERO
	MOVD   $1, TRUE
	VZERO  ZER
	VO     HL, HH, T1H
	VCEQGS ZER, T1H, T1H
	MOVDEQ TRUE, ISZERO
	VX     HL, PL, T1L
	VX     HH, PH, T1H
	VO     T1L, T1H, T1H
	VCEQGS ZER, T1H, T1H
	MOVDEQ TRUE, ISZERO
	MOVD   ISZERO, ret+24(FP)

	// X=Z1; Y=Z2; MUL; T-   // Z3 = Z1*Z2
	VL   80(P1ptr), X1       // Z1H

		if v == "" || !strings.HasPrefix(trimmed, v) {
			return "", false // Invalid or incomplete version (just vX or vX.Y).
		}
		if v == trimmed {
			tagIsCanonical = true
		}
		return v, tagIsCanonical
	}

	// If the VCS gave us a valid version, use that.

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