public void execute()

in src/main/java/org/apache/maven/plugins/help/EffectivePomMojo.java [103:154]
42 lines of code
10 McCabe index (conditional complexity)

    public void execute() throws MojoExecutionException {
        if (artifact != null && !artifact.isEmpty()) {
            project = getMavenProject(artifact);
            projects = Collections.singletonList(project);
        }

        StringWriter w = new StringWriter();
        String encoding = output != null ? project.getModel().getModelEncoding() : System.getProperty("file.encoding");
        XMLWriter writer = new PrettyPrintXMLWriter(
                w, StringUtils.repeat(" ", XmlWriterUtil.DEFAULT_INDENTATION_SIZE), encoding, null);

        writeHeader(writer);

        if (shouldWriteAllEffectivePOMsInReactor()) {
            // outer root element
            writer.startElement("projects");
            for (MavenProject subProject : projects) {
                writeEffectivePom(subProject, writer);
            }
            writer.endElement();
        } else {
            writeEffectivePom(project, writer);
        }

        String effectivePom = prettyFormat(w.toString(), encoding, false);
        if (verbose) {
            // tweak location tracking comment, that are put on a separate line by pretty print
            effectivePom = effectivePom.replaceAll("(?m)>\\s+<!--}", ">  <!-- ");
        }

        if (output != null) {
            try {
                writeXmlFile(output, effectivePom);
            } catch (IOException e) {
                throw new MojoExecutionException("Cannot write effective-POM to output: " + output, e);
            }

            getLog().info("Effective-POM written to: " + output);
        } else {
            if (MessageUtils.isColorEnabled()) {
                // add color to comments
                String comment = MessageUtils.buffer().project("<!--.-->").build();
                int dotIndex = comment.indexOf(".");
                String commentStart = comment.substring(0, dotIndex);
                String commentEnd = comment.substring(dotIndex + 1);
                effectivePom = effectivePom.replace("<!--", commentStart).replace("-->", commentEnd);
            }

            getLog().info(LS + "Effective POMs, after inheritance, interpolation, and profiles are applied:" + LS + LS
                    + effectivePom + LS);
        }
    }