code: public List<JavaComment> paramDoc(final String paramName, List<JavaComment> originals) {
          final List<JavaComment> results = new ArrayList<JavaComment>(originals.size());
          for (JavaComment original : originals) {
              original._switch(new JavaComment.SwitchBlock() {
                  @Override
                  public void _case(JavaDocComment x) {
                      paramDocSections(paramName, x.tagSections, results);
                  }
  
                  @Override
                  public void _case(JavaBlockComment x) {
                      // skip
                  }
  
                  @Override
                  public void _case(JavaEOLComment x) {
                      // skip
                  }
              });
          }
          return results;
      }
docs: Produce a copy of a list of JavaDoc comments by pulling specified parameter tags out of an orignal list of comments.
  Block and EOL comments are skipped.  JavaDoc comments are stripped down to only have the content of the specified
  param tag