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final allCompanies = CompaniesData.fromJson(result.data).allCompanies;

return ListView.builder(
  itemBuilder: (_, index) {
    return ListTile(
      leading: Icon(Icons.card_travel),
      title: Text(allCompanies[index].name),
      subtitle: Text(allCompanies[index].industry),
    );
  },

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if (result.loading) {
  return const Center(
    child: CircularProgressIndicator(),
  );
}

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if (result.hasException) {
  return Text(result.exception.toString());
}

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options: QueryOptions(
  documentNode: CompaniesDataQuery().document,
),

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Query(
  options: QueryOptions(
    documentNode: CompaniesDataQuery().document,
  ),
  builder: (
    QueryResult result, {
    Future<QueryResult> Function() refetch,
    FetchMore fetchMore,
  }) {
    if (result.hasException) {

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GraphqlProvider(
  uri: 'http://$host:9002/graphql',
  child: MaterialApp(…),
)

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String get host {
  if (Platform.isAndroid) {
    return '10.0.2.2';
  } else {
    return 'localhost';
  }
}

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import 'package:graphql_flutter/graphql_flutter.dart';
import 'package:flutter/material.dart';

String uuidFromObject(Object object) {
  if (object is Map<String, Object>) {
    final String typeName = object['__typename'] as String;
    final String id = object['id'].toString();
    if (typeName != null && id != null) {
      return <String>[typeName, id].join('/');
    }

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query CompaniesData {
    allCompanies {
        id
        name
        industry
        __typename
    }
}

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targets:
  $default:
    sources:
      - lib/**
      - graphql/**
      - my.schema.json
    builders:
      artemis:
        options:
          schema_mapping: