Confusing Attributes in getSearchResults Method For Select From Field

public function getSearchResults(string $search): array
{
    if (! $this->getSearchResultsUsing) {
        return [];
    }

    $results = $this->evaluate($this->getSearchResultsUsing, [
        'query' => $search,
        'search' => $search,
        'searchQuery' => $search,
    ]);

    if ($results instanceof Arrayable) {
        $results = $results->toArray();
    }

    return $results;
}

public function getSearchResults(string $search): array
{
    if (! $this->getSearchResultsUsing) {
        return [];
    }

    $relationship = Relation::noConstraints(fn() => $this->getRelationship());

    $relationshipQuery = app(RelationshipJoiner::class)->prepareQueryForNoConstraints($relationship);

    $results = $this->evaluate($this->getSearchResultsUsing, [
        'query' => $relationshipQuery,
        'search' => $search,
    ]);

    if ($results instanceof Arrayable) {
        $results = $results->toArray();
    }

    return $results;
}