return new UriGradleProvider(location);
    }

    public static GradleProvider version(String version) {
        return new VersionGradleProvider(version);
    }

    public static GradleProvider embedded() {
        return new EmbeddedGradleProvider();
    }

    private static final class InstallationGradleProvider extends GradleProvider {
        private final File gradleHome;

import java.io.File;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;
import java.util.Map;

public class GradleExecutionParameters {

    private final GradleProvider gradleProvider;
    private final File gradleUserHome;
    private final File projectDir;
    private final List<String> buildArgs;
    private final List<String> jvmArgs;
    private final ClassPath injectedClassPath;

            TestedGradleDistribution(GradleVersion gradleVersion, GradleProvider gradleProvider) {
                this.gradleVersion = gradleVersion
                this.gradleProvider = gradleProvider
            }

            static TestedGradleDistribution forVersion(GradleVersion gradleVersion) {
                new TestedGradleDistribution(gradleVersion, GradleProvider.version(gradleVersion.version))
            }

    }

    @Override
    public GradleRunner withGradleVersion(String versionNumber) {
        this.gradleProvider = GradleProvider.version(versionNumber);
        return this;
    }

    @Override
    public GradleRunner withGradleInstallation(File installation) {
        this.gradleProvider = GradleProvider.installation(installation);
        return this;
    }

    @Override

    }

    private GradleConnector buildConnector(File gradleUserHome, File projectDir, boolean embedded, GradleProvider gradleProvider) {
        DefaultGradleConnector gradleConnector = (DefaultGradleConnector) GradleConnector.newConnector();
        gradleConnector.useDistributionBaseDir(GradleUserHomeLookup.gradleUserHome());
        gradleProvider.applyTo(gradleConnector);
        gradleConnector.useGradleUserHomeDir(gradleUserHome);

Class <org.gradle.testkit.runner.internal.GradleProvider$VersionGradleProvider> is not annotated (directly or via its package) with @org.gradle.api.NonNullApi in (GradleProvider.java:0)
Class <org.gradle.testkit.runner.internal.GradleProvider> is not annotated (directly or via its package) with @org.gradle.api.NonNullApi in (GradleProvider.java:0)