// kinds of upgrades can be performed
func GetAvailableUpgrades(versionGetterImpl VersionGetter, experimentalUpgradesAllowed, rcUpgradesAllowed bool, client clientset.Interface, printer output.Printer) ([]Upgrade, error) {
	printer.Printf("[upgrade] Fetching available versions to upgrade to\n")

	// Collect the upgrades kubeadm can do in this list
	var upgrades []Upgrade

 * limitations under the License.
 */

package gradlebuild.binarycompatibility.rules;

import gradlebuild.binarycompatibility.upgrades.UpgradedProperty.BinaryCompatibility;
import gradlebuild.binarycompatibility.upgrades.UpgradedProperty.ReplacedAccessor;
import gradlebuild.binarycompatibility.upgrades.UpgradedProperty.AccessorKey;
import me.champeau.gradle.japicmp.report.PostProcessViolationsRule;

 */

package gradlebuild.binarycompatibility.rules;

import gradlebuild.binarycompatibility.upgrades.UpgradedProperties;
import gradlebuild.binarycompatibility.upgrades.UpgradedProperty;
import gradlebuild.binarycompatibility.upgrades.UpgradedProperty.ReplacedAccessor;
import gradlebuild.binarycompatibility.upgrades.UpgradedProperty.AccessorKey;
import me.champeau.gradle.japicmp.report.SetupRule;

  echo "!!! EXPERIMENTAL !!!"
  echo "!!! This upgrade script is not meant to be run in production !!!"
  echo ""
  echo "${0} [-M | -N | -P] [-o] (-l | <version number or publication>)"
  echo "  Upgrades master and nodes by default"
  echo "  -M:  Upgrade master only"
  echo "  -N:  Upgrade nodes only"
  echo "  -P:  Node upgrade prerequisites only (create a new instance template)"

    /**
     * Automatically accept changes that are valid property upgrades of a getter or setter.
     *
     * Here we automatically accept the following cases:
     * - A setter `setX` of an upgraded property is removed
     * - A boolean `isX` of an upgraded property is removed
     * - A new getter `getX` is added, where the old getter is a boolean getter `isX` of an upgraded property

2. We will use `bytecode upgrades` when we talk about Property or API upgrades.
3. We will use `bytecode interception` when we talk about both bytecode instrumentation or bytecode upgrades.
4. We will use `transformation` when we talk about applying some interception to to jars or classes or classpath.

It is possible that in the code we use all these terms interchangeably, but we will try to be consistent in this document.

	var tests = []struct {
		name          string
		upgrades      []upgrade.Upgrade
		versionStates []outputapiv1alpha3.ComponentConfigVersionState
		buf           *bytes.Buffer
		expectedBytes []byte
		externalEtcd  bool
	}{
		{
			name: "Patch version available",
			upgrades: []upgrade.Upgrade{
				{
					Description: "version in the v1.18 series",
					Before: upgrade.ClusterState{
						KubeVersion: "v1.18.1",

                    }
                    file("build/classes/java/main/META-INF/upgrades").mkdirs()
                    def upgradedPropertiesFile = file("build/classes/java/main/META-INF/upgrades/upgraded-properties.json")
                    if (!upgradedPropertiesFile.exists()) {

		return nil
	}

	return errors.Errorf("Specified version to upgrade to %q is an unstable version and such upgrades weren't allowed via setting the --allow-*-upgrades flags", newK8sVersionStr)
}

// detectTooOldKubelets errors out if the kubelet versions are so old that an unsupported skew would happen if the cluster was upgraded

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * Contains registry for classes with property upgrades.
 */
@org.gradle.api.NonNullApi