docs: private double getAngle(ServletRequest pRequest) {
          // Get angle
          double angle = ServletUtil.getDoubleParameter(pRequest, PARAM_TEXT_ROTATION, 0.0);
  
          // Convert to radians, if needed
          String units = pRequest.getParameter(PARAM_TEXT_ROTATION_UNITS);
          if (!StringUtil.isEmpty(units) && ROTATION_DEGREES.equalsIgnoreCase(units)) {
              angle = Math.toRadians(angle);
          }
  
          return angle;
      }