public function up() 	{ 		Schema::table('applicants', function (Blueprint $table) { 			$table->dropColumn(['email', 'code']); 		});  		Schema::table('applicants', function (Blueprint $table) { 			$table->string('code', 10); 			$table->boolean('is_offline')->default(false); 			$table->string('email', 50)->nullable(); 		}); 	}