code: public static Group groupsCreate(String access_token,String name){
  		String groupJson = String.format("{\"group\":{\"name\":\"%1$s\"}}",name);
  		HttpUriRequest httpUriRequest = RequestBuilder.post()
  										.setHeader(jsonHeader)
  										.setUri(BASE_URI+"/cgi-bin/groups/create")
  										.addParameter(PARAM_ACCESS_TOKEN, API.accessToken(access_token))
  										.setEntity(new StringEntity(groupJson,Charset.forName("utf-8")))
  										.build();
  		return LocalHttpClient.executeJsonResult(httpUriRequest,Group.class);
  	}
docs: 创建分组
  @param access_token access_token
  @param name name
  @return Group