However, this would limit the ability of the Gradle ecosystem plugin authors to take advantage of new Java features and improvements.

One example is when one of the most popular plugins started requiring Java 17 because the underlying framework behind the plugin began requiring 17, and code from the framework was used in the plugin itself.
What would have happened if Gradle was limited to _only Java 11_ at the time?

## Decision

import com.google.common.annotations.GwtCompatible;
import org.jspecify.annotations.NullMarked;
import org.jspecify.annotations.Nullable;

/**
 * To be implemented by test generators that can produce test subjects without requiring any
 * parameters.
 *
 * @param <T> the type created by this generator.
 * @author George van den Driessche
 */
@GwtCompatible
@NullMarked
public interface TestSubjectGenerator<T extends @Nullable Object> {

import com.google.common.annotations.GwtCompatible;
import org.jspecify.annotations.NullMarked;
import org.jspecify.annotations.Nullable;

/**
 * To be implemented by test generators that can produce test subjects without requiring any
 * parameters.
 *
 * @param <T> the type created by this generator.
 * @author George van den Driessche
 */
@GwtCompatible
@NullMarked
public interface TestSubjectGenerator<T extends @Nullable Object> {

            param("env.JDK8", javaHome(OpenJdk8, Os.LINUX))
            param("env.JDK11", javaHome(OpenJdk11, Os.LINUX))
            param("env.JDK17", javaHome(OpenJdk17, Os.LINUX))
            // Keep 21 and 25 for tests requiring it specifically: https://github.com/gradle/gradle/pull/35410#discussion_r2460835304
            param("env.JDK21", javaHome(OpenJdk21, Os.LINUX))
            param("env.JDK25", javaHome(OpenJdk25, Os.LINUX))

        </field>
        <field>
          <name>requiresDependencyResolution</name>
          <version>1.0.0/1.1.0</version>
          <type>String</type>
          <description>
            Flags this Mojo as requiring the dependencies in the specified class path to be resolved before it can
            execute: {@code compile}, {@code runtime}, {@code test},

                .collect(Collectors.joining(" "));
    }

    /**
     * Determines whether the current request is authorized to access the API endpoint.
     * This default implementation returns false, requiring subclasses to override
     * and implement proper access control logic.
     *
     * @return true if access is allowed, false otherwise
     */
    protected boolean isAccessAllowed() {
        return false;

     */
    public static NtlmAuthenticator getDefault() {
        return auth;
    }

    /**
     * Gets the URL that is requesting authentication.
     * @return the URL requiring authentication
     */
    protected final String getRequestingURL() {
        return this.url;
    }

    /**
     * Gets the authentication exception that triggered this request.

    // ===================================================

    @Test
    public void testRdmaConnectionLifecycle() throws Exception {
        // Test connection lifecycle without requiring real server
        RdmaProvider provider = RdmaProviderFactory.selectBestProvider();
        assertNotNull(provider, "Should always have a provider (at least TCP fallback)");

        // Use mock address for testing

        if (auth != null) {
            return;
        }
        auth = a;
    }

    /**
     * Gets the URL that is requesting authentication.
     * @return the URL requiring authentication
     */
    protected final String getRequestingURL() {
        return url;
    }

    /**
     * Gets the authentication exception that triggered this request.

     * if this source represents a resolved artifact with known coordinates.
     * <p>
     * This method is primarily used by resolved sources to provide the model ID
     * without requiring the XML to be parsed. For build sources, this typically
     * returns {@code null} since the coordinates are determined by parsing the POM.
     *