code: public ContentType getContentType() {
          String contentType = m_headers.get(HttpDefs.CONTENT_TYPE);
          if (contentType == null) {
              return null;
          }
          return new ContentType(contentType);
      }
docs: Get the content-type header from this response as a {@link ContentType} object.
  
  @return  The {@link ContentType} header from this response or null if there isn't one.