}

	// Agent A applies initial configuration
	if err := f.Apply(newObj.DeepCopyObject(), "fieldmanager_z", false); err != nil {
		t.Fatalf("failed to apply object: %v", err)
	}

	// Agent B applies additive configuration
	if err := f.Apply(appliedObj, "fieldmanager_b", false); err != nil {
		t.Fatalf("failed to apply object %v", err)
	}

			),
		},
		{
			fieldManager: "kubectl",
			original: []byte(`
apiVersion: apps/v1
kind: Deployment
metadata:
  name: my-deployment
spec:
  replicas: 3
`),
			applied: []byte(`
apiVersion: apps/v1
kind: Deployment
metadata:
  name: my-deployment
spec:
  replicas: 100 # update replicas
`),
		},
		{
			fieldManager: "kubectl",
			lastApplied: []byte(`

		}
	} else {
		if options.FieldManager == "" {
			// This field is defaulted to "kubectl" by kubectl, but HAS TO be explicitly set by controllers.
			allErrs = append(allErrs, field.Required(field.NewPath("fieldManager"), "is required for apply patch"))
		}
	}
	allErrs = append(allErrs, ValidateFieldManager(options.FieldManager, field.NewPath("fieldManager"))...)

// applied if another fieldManager has updated or force applied any of the previously applied fields.
// Experimental!
func ExtractValidatingAdmissionPolicy(validatingAdmissionPolicy *admissionregistrationv1alpha1.ValidatingAdmissionPolicy, fieldManager string) (*ValidatingAdmissionPolicyApplyConfiguration, error) {
	return extractValidatingAdmissionPolicy(validatingAdmissionPolicy, fieldManager, "")
}

// Note that an extracted apply configuration will contain fewer fields than what the fieldManager previously
// applied if another fieldManager has updated or force applied any of the previously applied fields.
// Experimental!
func ExtractDeployment(deployment *apiappsv1.Deployment, fieldManager string) (*DeploymentApplyConfiguration, error) {
	return extractDeployment(deployment, fieldManager, "")
}

// applied if another fieldManager has updated or force applied any of the previously applied fields.
// Experimental!
func ExtractCertificateSigningRequest(certificateSigningRequest *apicertificatesv1.CertificateSigningRequest, fieldManager string) (*CertificateSigningRequestApplyConfiguration, error) {
	return extractCertificateSigningRequest(certificateSigningRequest, fieldManager, "")
}

// the fieldManager never owned fields any fields.
// componentStatus must be a unmodified ComponentStatus API object that was retrieved from the Kubernetes API.
// ExtractComponentStatus provides a way to perform a extract/modify-in-place/apply workflow.
// Note that an extracted apply configuration will contain fewer fields than what the fieldManager previously

// Note that an extracted apply configuration will contain fewer fields than what the fieldManager previously
// applied if another fieldManager has updated or force applied any of the previously applied fields.
// Experimental!
func ExtractEndpoints(endpoints *apicorev1.Endpoints, fieldManager string) (*EndpointsApplyConfiguration, error) {
	return extractEndpoints(endpoints, fieldManager, "")
}

// ExtractEndpointsStatus is the same as ExtractEndpoints except

// applied if another fieldManager has updated or force applied any of the previously applied fields.
// Experimental!
func ExtractPodTemplate(podTemplate *apicorev1.PodTemplate, fieldManager string) (*PodTemplateApplyConfiguration, error) {
	return extractPodTemplate(podTemplate, fieldManager, "")
}

// the fieldManager never owned fields any fields.
// persistentVolume must be a unmodified PersistentVolume API object that was retrieved from the Kubernetes API.
// ExtractPersistentVolume provides a way to perform a extract/modify-in-place/apply workflow.
// Note that an extracted apply configuration will contain fewer fields than what the fieldManager previously