code: @Override
      public boolean asyncCheckBuffers(InterChannelCallback callback) {
          try {
              return checkBuffer();
          } catch (IOException ioe) {
              if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled()) {
                  Tr.debug(tc, "We should never get to this point, exception was : " + ioe);
              }
          }
          return false;
      }
docs: /*
  (non-Javadoc)
  
  @see com.ibm.wsspi.http.ee7.HttpInputStreamExtended#asyncCheckBuffers(com.ibm.wsspi.channelfw.InterChannelCallback)