table('oidc_role_mappings'); $table ->addColumn('group_id', 'string', ['limit' => 128, 'null' => false]) ->addColumn('role', 'string', ['limit' => 32, 'null' => false]); $this->addTimestampColumn($table, 'created_at'); $table ->addIndex(['group_id'], ['unique' => true, 'name' => 'uniq_oidc_role_mappings_group_id']) ->create(); } }