setContentType

scrapeableFile.setContentType( String contentType ) (professional and enterprise editions only)
Description
In certain rare cases it may be necessary to explicitly set the content type of the POST data of an HTTP request. This may be required in cases where a site is using AJAX, and the POST payload of a request is sent as XML (e.g., using the setRequestEntity method). This method must be invoked before the HTTP request is made (e.g., "Before file is scraped" for a scrapeable file).
Example
// Sets the type of the POST entity to XML.
scrapeableFile.setContentType( "text/xml" );