Parameters field A field to add to the response header.
The information to specify for that field. Description You can use the addResponseHeader function to add information to the header of the response you send to the client. For example, if the response you send to the client uses a custom content type, you should encode this content type in the response header. If you want a custom header, you must first remove the old default content type from the header and then add the new one. Remember that the header is sent with the first part of the response.