java.net.ProtocolException: DELETE does not support writing

[varis]

run example from http://github-api.kohsuke.org/

GitHub github = GitHub.connect();
GHRepository repo = github.createRepository(
  "new-repository","this is my new repository",
  "http://www.kohsuke.org/",true/*public*/);
repo.delete();

on android 4.4.4 API 19 and on delete got error

----- begin exception -----
04-21 23:58:06.992 1823-1836/? I/TestRunner﹕ java.net.ProtocolException: DELETE does not support writing
at com.android.okhttp.internal.http.HttpURLConnectionImpl.initHttpEngine(HttpURLConnectionImpl.java:258)
at com.android.okhttp.internal.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:86)
at com.android.okhttp.internal.http.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:197)
at com.android.okhttp.internal.http.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:254)
at org.kohsuke.github.Requester.buildRequest(Requester.java:299)
at org.kohsuke.github.Requester._to(Requester.java:221)
at org.kohsuke.github.Requester.to(Requester.java:191)
at org.kohsuke.github.Requester.to(Requester.java:179)
at org.kohsuke.github.GHRepository.delete(GHRepository.java:502)
at com.example.varis.githubtest.ApplicationTest.test(ApplicationTest.java:25)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at junit.framework.TestCase.runTest(TestCase.java:168)
at junit.framework.TestCase.runBare(TestCase.java:134)
at junit.framework.TestResult$1.protect(TestResult.java:115)
at junit.framework.TestResult.runProtected(TestResult.java:133)
at junit.framework.TestResult.run(TestResult.java:118)
at junit.framework.TestCase.run(TestCase.java:124)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:191)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:176)
at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:554)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1701)