Indicates a public API that is stable for callers to use, but has no guarantee of stability for
extension. Consequently, the API should only be extended within the package containing the API.
For example:
An interface marked with this annotation can have new methods added to it.
A non-final class with this annotation can be marked final.
A class with this annotation can have new abstract methods added.
a non-final method with this annotation can be marked final.
The list above is just for illustration purposes and is not exhaustive.
Adding this annotation to an API is considered API-breaking.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-04-08 UTC."],[[["The latest version available is 2.46.1, and the page lists several previous versions dating back to 2.1.2, all relating to `com.google.api.core.InternalExtensionOnly`."],["`InternalExtensionOnly` is an interface annotation used to indicate that a public API is stable for callers but not for extension outside of its defining package."],["APIs marked with `InternalExtensionOnly` can undergo changes that break extensions, such as adding new methods to interfaces or finalizing non-final classes or methods."],["This library is currently in a pre-GA stage, which means there might be limited support and potential breaking changes between versions."],["The `value()` method returns a string which provides context information on why the interface or class is marked with `InternalExtensionOnly`."]]],[]]
