Illuminate\Database\Query\Builder::orWhereNotNull PHP Method

    public function orWhereNotNull($column)
    {
        return $this->whereNotNull($column, 'or');
    }

 /**
  * Add an "or where not null" clause to the query.
  *
  * @param string $column
  * @return \Illuminate\Database\Query\Builder|static 
  * @static 
  */
 public static function orWhereNotNull($column)
 {
     return \Illuminate\Database\Query\Builder::orWhereNotNull($column);
 }