void __construct(Builder $query,

static void cacheMutatedAttributes(string $class) Extract and

mixed getAttributeValue(string $key) Get a plain attribute (not a relationship)

bool relationLoaded(string $key) Determine if the given relation is loaded

string getQualifiedOtherKeyName() Get the fully qualified associated key

string updatedAt() Get the name of the "updated at" column.

Builder getRelationQuery(

abstract void addConstraints() Set the base constraints

array match(array $models, Collection $results,

static bool isUnguarded() Determine if current state is "unguarded"