public StaticMapsRequest format(ImageFormat format) {
    return param("format", format);
  }
<code>format</code> defines the format of the resulting image. By default, the Google Static
Maps API creates PNG images. There are several possible formats including GIF, JPEG and PNG
types.

@param format The format of the static map.
@return Returns this {@code StaticMapsRequest} for call chaining.
src/main/java/com/google/maps/StaticMapsRequest.java