docs: public static MaterialGetResult get_material(String access_token,String media_id){
  		HttpUriRequest httpUriRequest = RequestBuilder.post()
  					.setHeader(jsonHeader)
  					.setUri(BASE_URI+"/cgi-bin/material/get_material")
  					.addParameter(PARAM_ACCESS_TOKEN, API.accessToken(access_token))
  					.setEntity(new StringEntity("{\"media_id\":\""+media_id+"\"}",Charset.forName("utf-8")))
  					.build();
  		return LocalHttpClient.execute(httpUriRequest,BytesOrJsonResponseHandler.createResponseHandler(MaterialGetResult.class));
  	}