title: Javadoc "cannot find symbol" error when using Lombok's @Builder annotation
body: <p>I have a class looking as below : </p>
  
  <pre><code>@Data
  @Builder
  public class Foo {
      private String param;
  
      /** My custom builder.*/
      public static FooBuilder builder(String _param){
          return builder().param(_param);
      }
  }
  </code></pre>
  
  <p>I get the following error : </p>
  
  <blockquote>
    <p>[ERROR] Failed to execute goal org.apache.maven.plugins:maven-javadoc-plugin:2.10.4:javadoc (default-cli) on project foo: An error has occurred in JavaDocs report generation:<br>
    [ERROR] Exit code: 1 - /home/workspace/foo/src/main/java/com/foo/Foo.java:34: error: cannot find symbol<br>
    [ERROR] public static FooBuilder builder(String _param)<br>
    [ERROR] ^<br>
    [ERROR] symbol:   class FooBuilder<br>
    [ERROR] location: class Foo</p>
  </blockquote>