public void execute()

in src/main/java/org/apache/maven/plugins/dependency/tree/TreeMojo.java [224:265]
31 lines of code
6 McCabe index (conditional complexity)

    public void execute() throws MojoExecutionException, MojoFailureException {
        if (isSkip()) {
            getLog().info("Skipping plugin execution");
            return;
        }

        try {
            String dependencyTreeString;

            // TODO: note that filter does not get applied due to MSHARED-4
            ArtifactFilter artifactFilter = createResolvingArtifactFilter();

            ProjectBuildingRequest buildingRequest =
                    new DefaultProjectBuildingRequest(session.getProjectBuildingRequest());

            buildingRequest.setProject(project);

            if (verbose) {
                rootNode = dependencyCollectorBuilder.collectDependencyGraph(buildingRequest, artifactFilter);
                dependencyTreeString = serializeDependencyTree(rootNode);
            } else {
                // non-verbose mode use dependency graph component, which gives consistent results with Maven version
                // running
                rootNode = dependencyGraphBuilder.buildDependencyGraph(buildingRequest, artifactFilter);

                dependencyTreeString = serializeDependencyTree(rootNode);
            }

            if (outputFile != null) {
                String encoding = Objects.toString(outputEncoding, "UTF-8");
                DependencyUtil.write(dependencyTreeString, outputFile, this.appendOutput, encoding);

                getLog().info("Wrote dependency tree to: " + outputFile);
            } else {
                DependencyUtil.log(dependencyTreeString, getLog());
            }
        } catch (DependencyGraphBuilderException | DependencyCollectorBuilderException exception) {
            throw new MojoExecutionException("Cannot build project dependency graph", exception);
        } catch (IOException exception) {
            throw new MojoExecutionException("Cannot serialize project dependency graph", exception);
        }
    }