void __construct(Builder $query,

array matchOne(array $models, Collection $results

$this syncOriginalAttribute(string $attribute) Sync a single original attribute

string getHasCompareKey() Get the key for comparing against the parent

string getForeignKey() Get the foreign key for the relationship.

static void unguard(bool $state = true) Disable all mass assignable

string getMorphType() Get the foreign key "type" name.

string getPlainForeignKey() Get the plain foreign key.

Model firstOrCreate(array $attributes)

void __clone() Force a clone of the underlying query builder when cloning