code: @Override
      public void readExternal(ObjectInput s) throws IOException, ClassNotFoundException {
          // writeExternal has already mapped filechannel content into a real buffer
          // so on reading it back, we just set up as though convert() was already
          // called
          this.status = WsByteBuffer.STATUS_BUFFER;
          super.readExternal(s);
          if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled()) {
              Tr.debug(tc, "readExternal(ObjectInput)");
          }
      }
docs: /*
  @see com.ibm.ws.bytebuffer.internal.WsByteBufferImpl#readExternal(java.io.ObjectInput)