returns the specified api key to query the weather api . concode_field_sep Date endingDate concode_elem_sep String apiKey concode_elem_sep City city concode_elem_sep SimpleDateFormat format concode_elem_sep Date startingDate concode_field_sep Date getStartingDate concode_elem_sep Configuration fromJSON concode_elem_sep Date getEndingDate concode_elem_sep City getCity
String function ( ) { return apiKey ; }