title: How to build sub module's child module via maven build argument
body: <p>Here's my project structure:</p>
  
  <pre><code> ├── module_1
       ├── sub_module
            ├── module_11
            ├── module_12
            ├── module_13
   ├── module_2
  </code></pre>
  
  <p>Now if I build it with the following command:</p>
  
  <pre><code>$~ mvn package -pl sub_module
  </code></pre>
  
  <p>It would only build <strong>sub_module</strong> but not its children module.</p>
  
  <p>The only way to build <code>module_11/module_12/module_13</code> is to specify them explicitly as following:</p>
  
  <pre><code>$~ mvn package -pl sub_module,sub_module/module_11,sub_module/module_12,sub_module/module_13
  </code></pre>
  
  <p>This is inconvenient for me, just wondering if there is an easier way approach this?</p>