public function up(): void 	{ 		Schema::table('client_surveys', function (Blueprint $table) { 			$table->unsignedSmallInteger('number_of_employees_with_special_qualification')->nullable()->after('number_of_other_employees'); 			$table->unsignedSmallInteger('number_of_employees_with_higher_qualification')->nullable()->after('number_of_other_employees'); 			$table->unsignedSmallInteger('number_of_employees_with_middle_qualification')->nullable()->after('number_of_other_employees'); 			$table->unsignedSmallInteger('number_of_employees_with_lower_qualification')->nullable()->after('number_of_other_employees'); 		}); 	}