/**
  * Merge the "wheres" from a relation query to a has query.
  *
  * @param  \Database\ORM\Builder  $hasQuery
  * @param  \Database\ORM\Relations\Relation  $relation
  * @return void
  */
 protected function mergeWheresToHas(Builder $hasQuery, Relation $relation)
 {
     $relationQuery = $relation->getBaseQuery();
     $hasQuery = $hasQuery->getModel()->removeGlobalScopes($hasQuery);
     $hasQuery->mergeWheres($relationQuery->wheres, $relationQuery->getBindings());
     $this->query->mergeBindings($hasQuery->getQuery());
 }