code: private void logWarning(String deprecationType, Object object, String methodName, Info info)
      {
          this.log.warn(String.format("Deprecated usage of %s [%s] in %s@%d,%d", deprecationType, object.getClass()
              .getCanonicalName() + "." + methodName, info.getTemplateName(), info.getLine(), info.getColumn()));
      }
docs: Helper method to log a warning when a deprecation has been found.
  
  @param deprecationType the type of deprecation (eg "getter", "setter", "method")
  @param object the object that has a deprecation
  @param methodName the deprecated method's name
  @param info a Velocity {@link org.apache.velocity.util.introspection.Info} object containing information about
  where the deprecation was located in the Velocity template file