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using Elsa.Extensions;
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using Elsa.Testing.Shared;
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using Elsa.Workflows.IntegrationTests.Scenarios.BlockingAndBreaking.Workflows;
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using Elsa.Workflows.Options;
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using Microsoft.Extensions.DependencyInjection;
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using Xunit.Abstractions;
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namespace Elsa.Workflows.IntegrationTests.Scenarios.BlockingAndBreaking;
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public class Tests
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{
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private readonly IWorkflowRunner _workflowRunner;
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private readonly CapturingTextWriter _capturingTextWriter = new();
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private readonly IWorkflowBuilderFactory _workflowBuilderFactory;
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private readonly IServiceProvider _services;
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public Tests(ITestOutputHelper testOutputHelper)
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{
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_services = new TestApplicationBuilder(testOutputHelper).WithCapturingTextWriter(_capturingTextWriter).Build();
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_workflowBuilderFactory = _services.GetRequiredService<IWorkflowBuilderFactory>();
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_workflowRunner = _services.GetRequiredService<IWorkflowRunner>();
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}
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[Fact(DisplayName = "Fork completes after all branches complete.")]
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public async Task Test1()
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{
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await _services.PopulateRegistriesAsync();
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var workflow = await _workflowBuilderFactory.CreateBuilder().BuildWorkflowAsync<WaitAllForkWorkflow>();
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// Start workflow.
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var result1 = await _workflowRunner.RunAsync(workflow);
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// Resume the first branch.
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var bookmark = result1.WorkflowState.Bookmarks.FirstOrDefault(x => x.ActivityId == "Branch 1");
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var runOptions = new RunWorkflowOptions { BookmarkId = bookmark!.Id };
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var result2 = await _workflowRunner.RunAsync(workflow, result1.WorkflowState, runOptions);
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// Resume the second branch.
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bookmark = result2.WorkflowState.Bookmarks.FirstOrDefault(x => x.ActivityId == "Branch 2");
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runOptions = new RunWorkflowOptions { BookmarkId = bookmark!.Id };
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var result3 = await _workflowRunner.RunAsync(workflow, result2.WorkflowState, runOptions);
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// Verify expected output.
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var lines = _capturingTextWriter.Lines.ToList();
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Assert.Equal(new[] { "Start", "Branch 1", "Branch 2", "Branch 1 - Resumed", "Branch 2 - Resumed", "End" }, lines);
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}
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[Fact(DisplayName = "Fork completes after any branch completes.")]
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public async Task Test2()
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{
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await _services.PopulateRegistriesAsync();
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var workflow = await _workflowBuilderFactory.CreateBuilder().BuildWorkflowAsync<WaitAnyForkWorkflow>();
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// Start workflow.
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var result1 = await _workflowRunner.RunAsync(workflow);
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// Resume the first branch.
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var bookmark = result1.WorkflowState.Bookmarks.FirstOrDefault(x => x.ActivityId == "Branch 1");
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var runOptions = new RunWorkflowOptions { BookmarkId = bookmark!.Id };
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var result2 = await _workflowRunner.RunAsync(workflow, result1.WorkflowState, runOptions);
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// Verify expected output.
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var lines = _capturingTextWriter.Lines.ToList();
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Assert.Equal(new[] { "Start", "Branch 1", "Branch 2", "Branch 1 - Resumed", "End" }, lines);
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}
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[Fact(DisplayName = "Break breaks out of While loop.")]
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public async Task Test3()
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{
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await _services.PopulateRegistriesAsync();
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var workflow = await _workflowBuilderFactory.CreateBuilder().BuildWorkflowAsync<BreakWhileFromForkWorkflow>();
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// Start workflow.
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var result1 = await _workflowRunner.RunAsync(workflow);
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// Resume the first branch.
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var bookmark = result1.WorkflowState.Bookmarks.FirstOrDefault(x => x.ActivityId == "Branch 1");
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var runOptions = new RunWorkflowOptions { BookmarkId = bookmark!.Id };
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var result2 = await _workflowRunner.RunAsync(workflow, result1.WorkflowState, runOptions);
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// There should be no bookmarks left, since the while loop was broken out of.
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Assert.Empty(result2.WorkflowState.Bookmarks);
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// Verify expected output.
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var lines = _capturingTextWriter.Lines.ToList();
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Assert.Equal(new[] { "Start", "Branch 1", "Branch 2", "Branch 1 - Resumed", "End" }, lines);
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}
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}
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+61
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using Elsa.Workflows.Activities;
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using Elsa.Workflows.Memory;
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using Elsa.Workflows.Runtime.Activities;
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namespace Elsa.Workflows.IntegrationTests.Scenarios.BlockingAndBreaking.Workflows;
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public class BreakWhileFromForkWorkflow : WorkflowBase
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{
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protected override void Build(IWorkflowBuilder workflow)
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{
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var currentValue = new Variable<int?>("CurrentValue", 0);
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workflow.WithVariable(currentValue);
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workflow.Root = new Sequence
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{
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Activities =
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{
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new WriteLine("Start"),
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new While(() => true)
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{
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Body = new Sequence
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{
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Activities =
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{
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new Fork
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{
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JoinMode = ForkJoinMode.WaitAll,
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Branches =
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{
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new Sequence
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{
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Activities =
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{
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new WriteLine("Branch 1"),
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new Event("Branch 1") { Id = "Branch 1" },
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new WriteLine("Branch 1 - Resumed"),
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// This should break the while loop, not matter how high up in the tree it is.
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new Break()
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}
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},
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new Sequence
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{
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Activities =
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{
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new WriteLine("Branch 2"),
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new Event("Branch 2") { Id = "Branch 2" },
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new WriteLine("Branch 2 - Resumed"),
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}
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}
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}
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}
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}
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}
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},
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new WriteLine("End")
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}
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};
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}
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}
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+50
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using Elsa.Workflows.Activities;
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using Elsa.Workflows.Memory;
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using Elsa.Workflows.Runtime.Activities;
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namespace Elsa.Workflows.IntegrationTests.Scenarios.BlockingAndBreaking.Workflows;
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public class WaitAllForkWorkflow : WorkflowBase
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{
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protected override void Build(IWorkflowBuilder workflow)
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{
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var currentValue = new Variable<int?>("CurrentValue", 0);
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workflow.WithVariable(currentValue);
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workflow.Root =
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new Sequence
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{
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Activities =
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{
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new WriteLine("Start"),
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new Fork
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{
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JoinMode = ForkJoinMode.WaitAll,
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Branches =
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{
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new Sequence
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{
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Activities =
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{
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new WriteLine("Branch 1"),
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new Event("Branch 1") { Id = "Branch 1" },
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new WriteLine("Branch 1 - Resumed"),
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}
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},
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new Sequence
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{
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Activities =
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{
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new WriteLine("Branch 2"),
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new Event("Branch 2") { Id = "Branch 2" },
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new WriteLine("Branch 2 - Resumed"),
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}
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}
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}
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},
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new WriteLine("End")
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}
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};
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}
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}
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+50
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using Elsa.Workflows.Activities;
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using Elsa.Workflows.Memory;
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using Elsa.Workflows.Runtime.Activities;
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namespace Elsa.Workflows.IntegrationTests.Scenarios.BlockingAndBreaking.Workflows;
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public class WaitAnyForkWorkflow : WorkflowBase
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{
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protected override void Build(IWorkflowBuilder workflow)
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{
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var currentValue = new Variable<int?>("CurrentValue", 0);
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workflow.WithVariable(currentValue);
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workflow.Root =
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new Sequence
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{
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Activities =
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{
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new WriteLine("Start"),
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new Fork
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{
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JoinMode = ForkJoinMode.WaitAny,
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Branches =
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{
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new Sequence
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{
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Activities =
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{
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new WriteLine("Branch 1"),
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new Event("Branch 1") { Id = "Branch 1" },
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new WriteLine("Branch 1 - Resumed"),
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}
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},
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new Sequence
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{
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Activities =
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{
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new WriteLine("Branch 2"),
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new Event("Branch 2") { Id = "Branch 2" },
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new WriteLine("Branch 2 - Resumed"),
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}
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}
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}
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},
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new WriteLine("End")
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}
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};
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}
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}
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