* from the runtime environment like {@link System#getProperties()} and environment variables.
     *
     * @param systemProperties The system properties, may be {@code null}.
     * @return This request, never {@code null}.
     */
    ModelBuildingRequest setSystemProperties(Properties systemProperties);

    /**
     * Gets the user properties to use for interpolation and profile activation. The user properties have been

import org.apache.maven.project.ProjectBuildingException;
import org.apache.maven.project.ProjectBuildingRequest;
import org.apache.maven.properties.internal.EnvironmentUtils;
import org.apache.maven.properties.internal.SystemProperties;
import org.apache.maven.repository.internal.MavenWorkspaceReader;
import org.apache.maven.repository.legacy.metadata.DefaultMetadataResolutionRequest;

import org.gradle.api.internal.file.temp.GradleUserHomeTemporaryFileProvider;
import org.gradle.initialization.GradleUserHomeDirProvider;
import org.gradle.internal.Cast;
import org.gradle.internal.SystemProperties;
import org.gradle.internal.file.FileMetadataAccessor;
import org.gradle.internal.jvm.Jvm;
import org.gradle.internal.nativeintegration.NativeCapabilities;
import org.gradle.internal.nativeintegration.ProcessEnvironment;

        compilerMemory=${config.compilerMemory}
        testRunnerMemory=${config.testRunnerMemory}
        testForkEvery=${config.testForkEvery}
        ${->
            config.systemProperties.entrySet().collect { "systemProp.${it.key}=${it.value}" }.join("\n")
        }
        """
    }

    def generateEcosystemPlugins(File rootProjectDir) {

                        // properties in dependencies the user does not know. See MNG-7563 for details.
                        .systemProperties(toProperties(session.getUserProperties(), session.getSystemProperties()))
                        .userProperties(Map.of())
                        .modelResolver(modelResolver)

        request.modelResolver(iSession.getData().get(SessionData.key(ModelResolver.class)));
        request.transformerContextBuilder(modelBuilder.newTransformerContextBuilder());
        request.systemProperties(session.getSystemProperties());
        request.userProperties(session.getUserProperties());
        request.modelCache(DefaultModelCache.newInstance(session, false));
        if (session.getCache() != null) {

import org.junit.Rule
import spock.lang.Specification

import java.lang.reflect.Field
import java.lang.reflect.Modifier

class OperatingSystemTest extends Specification {
    @Rule SetSystemProperties systemProperties = new SetSystemProperties()
    @Rule TestNameTestDirectoryProvider tmpDir = new TestNameTestDirectoryProvider(getClass())

    def setup() {
        OperatingSystem.resetCurrent()
    }

    def cleanup() {

        JavaForkOptions target = Mock(JavaForkOptions)
        when:
        parse("-Dfile.encoding=UTF-8 -Dfoo.encoding=blah -Dfile.encoding=UTF-16").copyTo(target)
        then:
        1 * target.systemProperties({
            it == new TreeMap(["file.encoding": "UTF-16"] + localeProperties())
        })
        1 * target.getDebugOptions() >> new DefaultJavaDebugOptions()
    }

    def "copyTo copies debugOptions"() {

extends java.net.Authenticator { public final java.util.Map systemProperties; public void Download$ProxyAuthenticator(java.util.Map); public final java.net.PasswordAuthenticati getPasswordAuthentic(); } org/gradle/wrapper/Download.class package org.gradle.wrapper; public final synchronized class Download { public final Logger logger; public final Download$DefaultDownloadProgr progressListener; public final java.util.Map systemProperties; public final int networkTimeout; public static java.util.HashMap...

class StartParameterTest extends Specification {
    @Rule private TestNameTestDirectoryProvider tmpDir = new TestNameTestDirectoryProvider(getClass())
    @Rule private SetSystemProperties systemProperties = new SetSystemProperties()

    void "new instance has correct state"() {
        def parameter = new StartParameter()
        parameter.settingsFile = 'settingsfile' as File