defaultLegacySupport.setSession(m2);
        latch.countDown();
        thread.join();
        assertNull(myRunnable.getSession());
    }

    class MyRunnable implements Runnable {

        private volatile MavenSession session;

        public void run() {
            try {
                latch.await();
            } catch (InterruptedException ignore) {

        StringWriter sWriter = new StringWriter(1024);

        MavenStaxWriter writer = new MavenStaxWriter();
        try {
            writer.write(sWriter, model.getDelegate());
        } catch (IOException | XMLStreamException e) {
            throw new ModelInterpolationException("Cannot serialize project model for interpolation.", e);
        }

        String serializedModel = sWriter.toString();

                String c = cache.get(value);
                if (c == null) {
                    try {
                        c = interpolator.interpolate(value, recursionInterceptor);
                    } catch (InterpolationException e) {
                        problems.add(BuilderProblem.Severity.ERROR, ModelProblem.Version.BASE, e.getMessage(), e);
                    }
                    cache.put(value, c);
                }

            throws RepositoryMetadataStoreException {
        try {
            updateRepositoryMetadata(localRepository, remoteRepository);
        } catch (IOException | XMLStreamException e) {
            throw new RepositoryMetadataStoreException("Error updating group repository metadata", e);
        }
    }

            PluginDescriptor pluginDescriptor = mojoDescriptor.getPluginDescriptor();
            return getMavenSession().getPluginContext(pluginDescriptor, ((DefaultProject) project).getProject());
        } catch (LookupException e) {
            throw new MavenException("The PluginContext is only available during a mojo execution", e);
        }
    }

                    new InstallRequest().setArtifacts(session.toArtifacts(request.getArtifacts()));

            InstallResult result = repositorySystem.install(session.getSession(), installRequest);
        } catch (InstallationException e) {
            throw new ArtifactInstallerException(e.getMessage(), e);
        }
    }

            for (org.apache.maven.api.Lifecycle lf : registry) {
                lifecycles.put(lf.id(), new Lifecycle(registry, lf));
            }
            return lifecycles;
        } catch (LookupException e) {
            throw new IllegalStateException("Unable to lookup lifecycles from the plexus container", e);
        }
    }

    public String getLifecyclePhaseList() {

                    .setArtifacts(session.toArtifacts(artifacts));

            DeployResult result = session.getRepositorySystem().deploy(session.getSession(), deployRequest);
        } catch (DeploymentException e) {
            throw new ArtifactDeployerException("Unable to deploy artifacts", e);
        }
    }

            ArtifactVersion version2 = node2.getArtifact().getSelectedVersion();

            return version1.compareTo(version2) <= 0 ? node1 : node2;
        } catch (OverConstrainedVersionException exception) {
            // TODO log message or throw exception?

            return null;
        }
    }

                            session, reactorContext, projectBuild.getProject(), taskSegment);
                    if (reactorBuildStatus.isHalted()) {
                        break;
                    }
                } catch (Exception e) {
                    break; // Why are we just ignoring this exception? Are exceptions are being used for flow control
                }
            }
        }
    }