public StaticMapsRequest center(String location) {
    return param("center", location);
  }
<code>center</code> (required if markers not present) defines the center of the map,
equidistant from all edges of the map.

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