title: Build error on jdk.incubator.http's visibility using maven and intellij
body: <p>I'm trying to use use jdk.incubator.http on maven, but it can not pass build process, the error shown in Intellij IDEA 2017.3</p>
  
  <pre><code>Error:(3, 21) java: package jdk.incubator.http is not visible
    (package jdk.incubator.http is declared in module jdk.incubator.httpclient, which is not in the module graph)
  </code></pre>
  
  <p>Pom file's build section is following:</p>
  
  <pre><code>&lt;build&gt;
      &lt;plugins&gt;
          &lt;plugin&gt;
              &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
              &lt;artifactId&gt;maven-compiler-plugin&lt;/artifactId&gt;
              &lt;version&gt;3.7.0&lt;/version&gt;
              &lt;configuration&gt;
                  &lt;source&gt;9&lt;/source&gt;
                  &lt;target&gt;9&lt;/target&gt;
                  &lt;compilerArgs&gt;
                      &lt;arg&gt;--add-modules=jdk.incubator.http&lt;/arg&gt;
                  &lt;/compilerArgs&gt;
              &lt;/configuration&gt;
          &lt;/plugin&gt;
      &lt;/plugins&gt;
  &lt;/build&gt;
  </code></pre>
  
  <p>I also can not use module-info.java cause there's issue with the invalid unnamed model name generated according to its file name</p>