code: public String getScheme() {
          if (WCCustomProperties.CHECK_REQUEST_OBJECT_IN_USE){
              checkRequestObjectInUse();
          }
          // 321485
          String scheme = this._request.getScheme();
          if (TraceComponent.isAnyTracingEnabled()&&logger.isLoggable (Level.FINE)) {  //306998.15
              logger.logp(Level.FINE, CLASS_NAME,"getScheme", "this->"+this+": "+" scheme --> " + scheme);
          }
          return scheme;
      }
docs: /* (non-Javadoc)
  @see javax.servlet.ServletRequest#getScheme()