@Override
    public boolean isInboundDone() {
      return false;
    }
This tests the case where a message header has been read and part of a message has been read,
but the decoded buffer is too small to hold all of the message. In this case the buffer is
completely full and should only take one overflow response to resolve the problem.
geode-core/src/test/java/org/apache/geode/internal/net/NioSslEngineTest.java