onOperation abstract method

FutureOr<GraphQLResult> onOperation(
  1. String? id,
  2. String query, [
  3. Map<String, dynamic>? variables,
  4. String? operationName,
])

Executes one operation and answers its result.

id identifies the operation within the connection, so that a subscription's events can be routed back to it.

Implementation

FutureOr<GraphQLResult> onOperation(
  String? id,
  String query, [
  Map<String, dynamic>? variables,
  String? operationName,
]);