docs: public String getCharacterEncoding() {
          if (com.ibm.ejs.ras.TraceComponent.isAnyTracingEnabled()&&logger.isLoggable (Level.FINE)) {  //306998.15
              logger.entering(CLASS_NAME,"getCharacterEncoding","["+this+"]");
          }
          if (_encoding == null) {
              setDefaultResponseEncoding();
          }
          // 311717
          if (com.ibm.ejs.ras.TraceComponent.isAnyTracingEnabled()&&logger.isLoggable (Level.FINE)) {  //306998.15
              logger.exiting(CLASS_NAME,"getCharacterEncoding", " encoding --> " + _encoding);
          }
  
          return _encoding;
      }