Missing task builders: NOOP, EXCLUSIVE_JOIN, START_WORKFLOW

[nthmost-orkes]

Summary

Three system task types have no builder class in Conductor/Definition/TaskType/. Users who need these types must construct WorkflowTask manually. NOOP is also absent from the WorkflowTaskTypeEnum.

Tested against: Conductor OSS 3.32.0-rc.9

Missing

Task Type	Enum constant	Builder class	Notes
NOOP	✗ missing from enum	✗	No-op task; completes immediately. Core OSS type.
EXCLUSIVE_JOIN	✓ EXCLUSIVEJOIN = 18	✗	Join for SWITCH branches; defaultExclusiveJoinTask unreachable.
START_WORKFLOW	✓ STARTWORKFLOW = 10	✗	Fire-and-forget child workflow; StartWorkflow model exists, no task builder.

Server Acceptance

All three types accepted by Conductor OSS 3.32.0-rc.9. NOOP and EXCLUSIVE_JOIN server acceptance confirmed in parallel Java SDK (#130, #133) and JavaScript SDK (#136, #137) audits against the same server.

Suggested Additions

// Add to WorkflowTaskTypeEnum:
[EnumMember(Value = "NOOP")]
NOOP = 35,

// NoopTask.cs
public class NoopTask : Task
{
    public NoopTask(string taskReferenceName)
        : base(taskReferenceName, WorkflowTask.WorkflowTaskTypeEnum.NOOP) { }
}

// ExclusiveJoinTask.cs
public class ExclusiveJoinTask : Task
{
    public ExclusiveJoinTask(string taskReferenceName, string[] joinOn,
        string[] defaultExclusiveJoinTask = null)
        : base(taskReferenceName, WorkflowTask.WorkflowTaskTypeEnum.EXCLUSIVEJOIN)
    {
        JoinOn = new List<string>(joinOn);
        if (defaultExclusiveJoinTask != null)
            DefaultExclusiveJoinTask = new List<string>(defaultExclusiveJoinTask);
    }
}

// StartWorkflowTask.cs
public class StartWorkflowTask : Task
{
    public StartWorkflowTask(string taskReferenceName, StartWorkflow startWorkflow)
        : base(taskReferenceName, WorkflowTask.WorkflowTaskTypeEnum.STARTWORKFLOW)
    {
        WithInput("startWorkflow", startWorkflow);
    }
}

Related: Java SDK #130 (NOOP), #133 (EXCLUSIVE_JOIN)