title: Add maven-build-classpath to plugin execution classpath
body: <p>I am writing some code-gen maven-plugin.</p>
  
  <p>I need my project classpath be injected in to my plugin execution classpath.</p>
  
  <p>I found this <a href="https://webtide.com/extending-the-maven-plugin-classpath-at-runtime/" rel="noreferrer">article</a>. The solution there works but is quite long. Maybe someone of you know an out of the box solution.</p>