code: function( post ) {
  		let latitude, longitude;
  
  		if ( ! post ) {
  			return;
  		}
  
  		latitude = parseFloat( getValueByKey( post.metadata, 'geo_latitude' ) );
  		longitude = parseFloat( getValueByKey( post.metadata, 'geo_longitude' ) );
  
  		if ( latitude && longitude ) {
  			return [ latitude, longitude ];
  		}
  	}
docs: Given a post object, returns an array of float coordinates representing
  the geographic location saved for that post, or `undefined` if the value
  cannot be determined.
  
  @param  {Object} post Post object
  @return {string}      Array of geographic float coordinates