this.repositorySystemSession = requireNonNull(repositorySystemSession);
        Properties executionProperties = new Properties();
        executionProperties.putAll(request.getSystemProperties());
        executionProperties.putAll(request.getUserProperties());
        this.executionProperties = executionProperties;
    }

    @Deprecated
    public MavenSession(
            PlexusContainer container,

                contributor.contribute(userPropertiesMap);
            }
            Properties newProperties = new Properties();
            newProperties.putAll(userPropertiesMap);
            mavenExecutionRequest.setUserProperties(newProperties);
        }
    }

            if (sourceDominant) {
                merged.putAll(target.getProperties());
                putAll(merged, source.getProperties(), CHILD_DIRECTORY_PROPERTY);
            } else {
                putAll(merged, source.getProperties(), CHILD_DIRECTORY_PROPERTY);
                merged.putAll(target.getProperties());
            }
            builder.properties(merged);

 * ManagedVersionMap
 */
@Deprecated
public class ManagedVersionMap extends HashMap<String, Artifact> {
    public ManagedVersionMap(Map<String, Artifact> map) {
        super();
        if (map != null) {
            putAll(map);
        }
    }

    public String toString() {
        StringBuilder buffer = new StringBuilder("ManagedVersionMap (" + size() + " entries)\n");
        Iterator<String> iter = keySet().iterator();

        } else if (targetLocations == null) {
            locations = sourceLocations;
        } else {
            locations = new LinkedHashMap<>();
            locations.putAll(sourceDominant ? targetLocations : sourceLocations);
            locations.putAll(sourceDominant ? sourceLocations : targetLocations);
        }

        return new InputLocation(-1, -1, InputSource.merge(source.getSource(), target.getSource()), locations);

        HashMap<String, String> result = new HashMap<>(getSystemProperties());
        if (project != null) {
            result.putAll(project.getModel().getProperties());
        }
        result.putAll(getUserProperties());
        return result;
    }

    @Nonnull
    @Override
    public Version getMavenVersion() {

        Map<String, String> mergedProps = new HashMap<>();
        mergedProps.putAll(getPropertiesFromRequestedProfiles(request));
        mergedProps.putAll(new HashMap<String, String>((Map) request.getSystemProperties()));
        mergedProps.putAll(new HashMap<String, String>((Map) request.getUserProperties()));
        return mergedProps;
    }

                    if (docStream != null) {
                        Map<String, Expression> doco = parseExpressionDocumentation(docStream);

                        expressionDocumentation.putAll(doco);
                    }
                } catch (IOException e) {
                    throw new ExpressionDocumentationException(
                            "Failed to read documentation for expression root: " + root, e);

        Map<String, String> props = new HashMap<>();
        if (recessive != null) {
            props.putAll(recessive);
        }
        if (dominant != null) {
            props.putAll(dominant);
        }
        return props;
    }

    private Artifact getRelocation(

     */
    @Deprecated
    public Model interpolate(Model model, Map<String, ?> context, boolean strict) throws ModelInterpolationException {
        Properties props = new Properties();
        props.putAll(context);

        return interpolate(model, null, new DefaultProjectBuilderConfiguration().setExecutionProperties(props), true);
    }