mutation
abstract fun <Data, Variables> mutation(operationName: String, variables: Variables, dataDeserializer: DeserializationStrategy<Data>, variablesSerializer: SerializationStrategy<Variables>, optionsBuilder: FirebaseDataConnect.MutationRefOptionsBuilder<Data, Variables>.() -> Unit? = null): MutationRef<Data, Variables>(source)
Creates a reference to the mutation operationName with the given variables.