src/Core/HttpClients/IntuitResponse.php
private function setContentType($key, $val){
     $trimedKey = trim($key);
     if(strcasecmp($trimedKey, CoreConstants::CONTENT_TYPE) == 0){
         $this->contentType = trim($val);
     }
   }
private function setContentType($key, $val){
     $trimedKey = trim($key);
     if(strcasecmp($trimedKey, CoreConstants::CONTENT_TYPE) == 0){
         $this->contentType = trim($val);
     }
   }
Find the headers for response, find the Content-type header and intuit_tid header and set it.
@param String   Header key
@param String   Header value