title: Maven plugin not found in pom.xml
body: <p>In my pom.xml I get the following error:</p>
  
  <pre><code>Plugin '''org.apache.maven.plugins:maven-javadoc-plugin:2.10.4''' not found less... (Ctrl+F1) 
  Inspects a Maven model for resolution problems.
  </code></pre>
  
  <p>At the specific place:</p>
  
  <pre><code>&lt;plugin&gt;
      &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
      &lt;artifactId&gt;maven-javadoc-plugin&lt;/artifactId&gt; &lt;--- here, red text
      &lt;version&gt;2.10.4&lt;/version&gt; &lt;--- version number is also in red text
      &lt;executions&gt;
          &lt;execution&gt;
              &lt;id&gt;attach-javadoc&lt;/id&gt;
              &lt;goals&gt;
                  &lt;goal&gt;jar&lt;/goal&gt;
              &lt;/goals&gt;
              &lt;configuration&gt;
                  &lt;additionalparam&gt;-Xdoclint:none&lt;/additionalparam&gt;
              &lt;/configuration&gt;
          &lt;/execution&gt;
      &lt;/executions&gt;
  &lt;/plugin&gt;
  </code></pre>
  
  <p>I looked in my <code>.m2/repository/org/apache/maven/plugins/</code> and the directory maven-javadoc-plugin doesn't exist.</p>
  
  <p>I tried <code>mvn dependency:purge-local-repository</code> but it's still not downloading.</p>