code: protected function getWhereAsArray()
      {
          $filters = [];
  
          if (!empty($this->filters)) {
              $filters = $this->filters;
          }
  
          if (!$this->allowDeleted) {
              $filters[] = "(`" . $this->table . "`.deleted = 0 OR `" . $this->table . "`.deleted IS NULL)";
          }
  
          if (!empty($this->joins)) {
              foreach ($this->joins as $join) {
                  $manager = $join['manager'];
                  $filters = array_merge($filters, $manager->getWhereAsArray());
              }
          }
  
          return $filters;
      }
docs: Where as array for recursive joins