public Response post(Cluster cluster, String path, String contentType, byte[] content)
    throws IOException {
    Header[] headers = new Header[1];
    headers[0] = new BasicHeader("Content-Type", contentType);
    return post(cluster, path, headers, content);
  }
Send a POST request
@param cluster     the cluster definition
@param path        the path or URI
@param contentType the content MIME type
@param content     the content bytes
@return a Response object with response detail
@throws IOException for error
hbase-rest/src/main/java/org/apache/hadoop/hbase/rest/client/Client.java