}
        } else if ("reactorProjects".equals(expression)) {
            value = session.getProjects();
        } else if ("project".equals(expression)) {
            value = project;
        } else if ("executedProject".equals(expression)) {
            value = project.getExecutionProject();
        } else if (expression.startsWith("project") || expression.startsWith("pom")) {

                collectStepTrace = (CollectStepData) data;
            } else if (data instanceof ArtifactDescriptorRequest) {
                artifactDescriptorRequest = (ArtifactDescriptorRequest) data;
            } else if (data instanceof ArtifactRequest) {
                artifactRequest = (ArtifactRequest) data;
            } else if (data instanceof Plugin) {
                plugin = (Plugin) data;
            }

            // assume these are system errors and further build is meaningless
            buildContext.getReactorBuildStatus().halt();
        } else if (MavenExecutionRequest.REACTOR_FAIL_NEVER.equals(rootSession.getReactorFailureBehavior())) {
            // continue the build
        } else if (MavenExecutionRequest.REACTOR_FAIL_AT_END.equals(rootSession.getReactorFailureBehavior())) {

                scopes = Arrays.asList(Artifact.SCOPE_COMPILE, Artifact.SCOPE_SYSTEM, Artifact.SCOPE_PROVIDED);
            } else if (Artifact.SCOPE_RUNTIME.equals(classpath)) {
                scopes = Arrays.asList(Artifact.SCOPE_COMPILE, Artifact.SCOPE_RUNTIME);
            } else if (Artifact.SCOPE_COMPILE_PLUS_RUNTIME.equals(classpath)) {
                scopes = Arrays.asList(

                                plugin,
                                pluginFile.getAbsolutePath());
                    }
                }
            } else {
                File pluginXml = new File(pluginFile, getPluginDescriptorLocation());

                if (pluginXml.isFile()) {
                    pluginDescriptor = parsePluginDescriptor(

                plugin.setArtifactId(tok[1]);
            } else {
                // pluginPrefix:version:goal, like remote-resources:3.5.0:process
                plugin = findPluginForPrefix(firstToken, session);
                plugin.setVersion(tok[1]);
            }
            goal = tok[2];
        } else {
            // We have a prefix and goal
            //
            // idea:idea

    }

    private String canonicalFileUrl(String url) throws IOException {
        if (!url.startsWith("file:")) {
            url = "file://" + url;
        } else if (url.startsWith("file:") && !url.startsWith("file://")) {
            url = "file://" + url.substring("file:".length());
        }

        // So now we have an url of the form file://<path>

        if (!hasBeenPackagedDuringThisSession(project)) {
            // fallback to loose class files only if artifacts haven't been packaged yet
            // and only for plain old jars. Not war files, not ear files, not anything else.
            return determineBuildOutputDirectoryForArtifact(project, artifact);
        }

        // The fall-through indicates that the artifact cannot be found;

            if (lrm != null && lrm.getRepository().getBasedir().equals(new File(repository.getBasedir()))) {
                return session;
            }
        } else {
            session = new DefaultRepositorySystemSession();
        }

        final LocalRepositoryManager llrm = new LegacyLocalRepositoryManager(repository);

            this.artifact = ArtifactUtils.copyArtifact(artifact);
            if ("pom".equals(artifact.getType()) && file != null) {
                pomHash = file.getPath().hashCode() + file.lastModified();
            } else {
                pomHash = 0;
            }
            this.resolveManagedVersions = resolveManagedVersions;
            this.repositories.add(localRepository);
            this.repositories.addAll(remoteRepositories);