code: public function down()
      {
  		Schema::table('admin_role', function ( $table ) {
  			$table->dropForeign(['role_id']);
  			$table->dropForeign(['admin_id']);
  		});
  
  		Schema::drop('admin_role');
  		Schema::drop('permission_role');
  		Schema::drop('permissions');
  		Schema::drop('roles');
      }
docs: Reverse the migrations.
  
  @return void