when:
        def properties = projectPropertiesLoader.loadProjectProperties()

        then:
        "system value" == properties["systemProp"]
    }

    def "load properties from start parameter"() {
        given:
        projectPropertiesArgs = ["paramProp": "param value"]

        when:
        def properties = projectPropertiesLoader.loadProjectProperties()

        then:

import org.gradle.internal.service.scopes.ServiceScope;

import java.util.Map;

@ServiceScope(Scope.Build.class)
public interface ProjectPropertiesLoader {

    Map<String, Object> loadProjectProperties();

        this.environment = environment;
        this.startParameter = startParameter;
    }

    @Override
    public Map<String, Object> loadProjectProperties() {
        Map<String, Object> properties = new HashMap<>();

        properties.putAll(projectPropertiesFromEnvironmentVariables());
        properties.putAll(projectPropertiesFromSystemProperties());

            if (setSystemProperties) {
                systemPropertiesInstaller.setSystemPropertiesFrom(loadedProperties);
            }

            Map<String, Object> projectProperties = projectPropertiesLoader.loadProjectProperties();
            loadedProperties.updateOverrideProperties(projectProperties);
            return new Loaded(loadedProperties, settingsDir);
        }

        @Override