src/Execution/MutationExecutor.php
protected static function handleSingleRelationCreate(Collection $singleValues, Relation $relation): void
    {
        self::executeCreate(
            $relation->getModel()->newInstance(),
            $singleValues,
            $relation
        );
    }
protected static function handleSingleRelationCreate(Collection $singleValues, Relation $relation): void
    {
        self::executeCreate(
            $relation->getModel()->newInstance(),
            $singleValues,
            $relation
        );
    }
protected static function handleSingleRelationCreate ( Collection $ singleValues , Relation $ relation ) : void { self :: executeCreate ( $ relation -> getModel ( ) -> newInstance ( ) , $ singleValues , $ relation ) ; }
Handle the creation with a single relation.

@param  \Illuminate\Support\Collection  $singleValues
@param  \Illuminate\Database\Eloquent\Relations\Relation  $relation
@return void
Handle the creation with a single relation .