how to use XcapStack?

```
What steps will reproduce the problem?
1.just call XcapStack.getDocument then ERROR: detaching thread with interp
frames

What is the expected output? What do you see instead?
ERROR: detaching thread with interp frames (count=18)
"main" prio=5 tid=1 RUNNABLE
| group="main" sCount=0 dsCount=0 obj=0x4001f1a8 self=0xce48
| sysTid=363 nice=0 sched=0/0 cgrp=default handle=-1345006528
| schedstat=( 1098319295 1842742466 198 )
at org.doubango.tinyWRAP.tinyWRAPJNI.XcapStack_getDocument(Native Method)
at org.doubango.tinyWRAP.XcapStack.getDocument(XcapStack.java:79)
at org.doubango.test.Main.onResume(Main.java:58)

What version of the product are you using? On what operating system?

Please provide any additional information below.

```

Original issue reported on code.google.com by `frea...@gmail.com` on 7 Aug 2012 at 1:09

Reproduce the failure from XcapStack.getDocument, following XcapStack.java:79 into the tinyWRAPJNI.XcapStack_getDocument native method and the call from Main.java:58. Determine why the call reports "detaching thread with interp frames" and verify that getDocument completes without the error and returns the expected document.

Written by the indexing model from the issue text.