code: function(data) {
  		for (var x in data) if (data.hasOwnProperty(x)) {
  			if (this.isBinary(data[x])) {
  				return true;
  			}
  		}
  
  		return false;
  	}
docs: Some of the providers require that only multipart is used with non-binary forms. This function checks whether the form contains binary data