code: public InstagramSubscription latitute(String latitude){
  		Preconditions.checkValidLatLong(latitude, "Invalid 'lat' key");
  		
  		this.params.put(Constants.LATITUDE, latitude);
  		
  		return this;
  	}
docs: Configure the latitude for geography subscription
  @param latitude The latitude for geography subscription
  @return the {@link InstagramSubscription} instance for method chaining