PropertyHost NO_OP = producer -> null;

    /**
     * Returns null if the host allows reads of its state, or a string that explains why reads are not allowed.
     */
    @Nullable
    String beforeRead(@Nullable ModelObject producer);

			fmt.Println("[preflight] This might take a minute or two, depending on the speed of your internet connection")
			fmt.Println("[preflight] You can also perform this action beforehand using 'kubeadm config images pull'")
			if err := preflight.RunPullImagesCheck(utilsexec.New(), initConfig, data.IgnorePreflightErrors()); err != nil {
				return err
			}
		} else {

	fmt.Println("[preflight] This might take a minute or two, depending on the speed of your internet connection")
	fmt.Println("[preflight] You can also perform this action beforehand using 'kubeadm config images pull'")
	return preflight.RunPullImagesCheck(utilsexec.New(), data.Cfg(), data.IgnorePreflightErrors())

 * <p>
 * This class, while technically is not immutable, should be considered as such once set up. If not mutated, it is also
 * thread-safe. The mutation of this class instances should happen beforehand their use in session.
 */
public class MavenChainedWorkspaceReader implements MavenWorkspaceReader {

    protected List<WorkspaceReader> readers;
    protected WorkspaceRepository repository;

    /**

		fmt.Println("[preflight] This might take a minute or two, depending on the speed of your internet connection")
		fmt.Println("[preflight] You can also perform this action beforehand using 'kubeadm config images pull'")
		if err := preflight.RunPullImagesCheck(utilsexec.New(), initCfg, j.IgnorePreflightErrors()); err != nil {
			return err
		}
	}
	return nil
}

This is useful if you don't know the valid field/attribute names (that would be needed for a Pydantic model) beforehand.

In this case, you can use `typing.Dict` (or just `dict` in Python 3.9 and above):

=== "Python 3.9+"

    ```Python hl_lines="6"
    {!> ../../../docs_src/extra_models/tutorial005_py39.py!}
    ```