If `username.expression` used 'claims.email', then 'claims.email_verified' must have been used in `username.expression` or `extra[*].valueExpression` or `claimValidationRules[*].expression`. An example claim validation rule expression that matches the validation automatically applied when `username.claim` is set to 'email' is 'claims.?email_verified.orValue(true)'.
   ([#123737](https://github.com/kubernetes/kubernetes/pull/123737), [@enj](https://github.com/enj))

- The Pod API field `.spec.schedulingGates[*].name` now requires qualified names (like `example.com/mygate`), matching validation for names of `.spec.readinessGates[*].name`. Any uses of the alpha scheduling gate feature prior to 1.27 that do not match that validation must be renamed or deleted before upgrading to 1.27. ([#115821](https://github.com/kubernetes/kubernetes/pull/115821), [@lianghao208](https://github.com/lianghao208)) [SIG Apps...

- DRA: client-side validation of a ResourceHandle would have accepted a missing DriverName, whereas server-side validation then would have raised an error. ([#124075](https://github.com/kubernetes/kubernetes/pull/124075), [@pohly](https://github.com/pohly)) [SIG Apps]

that workloads (e.g. Deployments, DaemonSets, etc.) which used `PersistentDisk` volumes were using them in read-only mode.  This validation provided very little value at relatively host implementation cost, and will no longer be validated.  If this is a problem for a specific use-case, please set the `SkipReadOnlyValidationGCE` gate to false to re-enable the validation, and file a Kubernetes bug with details. ([#121083](https://github.com/kubernetes/kubernetes/pull/121083), [@thockin](https://github.com/thockin))...

- Added fields `reason` and `fieldPath` into CRD validation rules to allow users to specify reason and field path when validation failed. ([#118041](https://github.com/kubernetes/kubernetes/pull/118041), [@cici37](https://github.com/cici37)) [SIG API Machinery]

It doesn't mean "`one_person` is the **class** called `Person`".

## Pydantic models

<a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic</a> is a Python library to perform data validation.

You declare the "shape" of the data as classes with attributes.

And each attribute has a type.

* Tutorial:
    * [Query Parameters and String Validations - Additional validation](https://fastapi.tiangolo.com/tutorial/query-params-str-validations/#additional-validation)
        * [Advantages of `Annotated`](https://fastapi.tiangolo.com/tutorial/query-params-str-validations/#advantages-of-annotated)

        }

        if (javaVersion.isCompatibleWith(JavaVersion.VERSION_22)) {
            // Does not work due to JVM validation issue: https://youtrack.jetbrains.com/issue/KT-66919
            excludeTestsMatching "org.gradle.docs.samples.*.building-kotlin-*"
            // Incompatible for unknown reasons, investigation ongoing

  repeated string certSigners = 68;

  // TODO: remove this?
  // No longer used.
  string configRootNamespace = 50;

  // Controls whether the server-side validation is enabled.
  google.protobuf.BoolValue configValidation = 3;

  // TODO: remove this?
  // No longer used.
  repeated string defaultConfigVisibilitySettings = 52;

Class <org.gradle.api.publish.internal.validation.PublicationWarningsCollector> is not annotated (directly or via its package) with @org.gradle.api.NonNullApi in (PublicationWarningsCollector.java:0)
Class <org.gradle.api.publish.internal.validation.PublicationWithProject> is not annotated (directly or via its package) with @org.gradle.api.NonNullApi in (PublicationWithProject.java:0)