}

                HttpEntity httpEntity = null;
                try {
                    final HttpResponse response = closeableHttpClient.execute(request, new BasicHttpContext(httpClientContext));
                    httpEntity = response.getEntity();
                    consumer.accept(response, httpEntity);
                } catch (final Exception e) {

                final HttpPost httpPost = new HttpPost(tokenUrl);
                if (StringUtil.isNotBlank(tokenReqParams)) {
                    final HttpEntity httpEntity = parseRequestParameters(tokenReqParams, null, encoding);
                    httpPost.setEntity(httpEntity);
                }
                httpRequest = httpPost;
            } else {
                final StringBuilder buf = new StringBuilder(100);

import java.io.InputStream;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpHost;
import org.apache.http.auth.AuthScheme;
import org.apache.http.auth.AuthSchemeProvider;
import org.apache.http.auth.AuthScope;
import org.apache.http.client.AuthCache;