The io.kubernetes:client-java-api library is in Maven Repository, where there is a link for a GitHub repository: https://github.com/kubernetes-client/java.
But that repository seems to only contain the io.kubernetes:client-java library. For instance, it doesn't contain source files like V1DeploymentStatusBuilder.java.
The source files can be downloaded as a tarball from the Central Repository.
But where is the repository for client-java-api? Isn't it publicly accessible?
The kubernetes folder in that repo is the API, if you look at the artifact it builds
https://github.com/kubernetes-client/java/blob/master/kubernetes/pom.xml#L4
Maybe the class you're looking for no longer exists on the master branch, or the *Builder.java classes are generated at compile time