code: @Override
      public String getPrefix() {
          String pattern = super.getPrefix();
  
          String prefix = pattern.replace(HOSTNAME_VARIABLE, hostName);
          prefix = prefix.replace("..", ".");
  
          return prefix;
      }
docs: Returns the prefix for the graphite reporter, formatting the prefix with the host name as input.
  <p/>
  An example of this: <pre>prefix = cluster.%s.mycomponent</pre>
  <p/>
  Will give: <pre>cluster.localhost.mycomponent</pre>
  <p/>
  Where localhost is the host name.
  <p/>
  It will also replace double dots {@code ..} with a single dot {@code .}.
  
  @return The prefix, with the host name appended.