ExternalWorkflowStub (temporal-sdk 1.32.1 API)

```
public interface ExternalWorkflowStub
```
Supports signalling and cancelling any workflows by the workflow type and their id. This is useful when an external workflow type is not known at the compile time and to call workflows in other languages.

See Also:

Workflow.newUntypedExternalWorkflowStub(String)

Method Summary

All Methods Static Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`cancel()`	Request cancellation of the workflow execution.
`void`	`cancel(java.lang.String reason)`	Request cancellation of the workflow execution with a reason.
`static <T> ExternalWorkflowStub`	`fromTyped(T typed)`	Extracts untyped ExternalWorkflowStub from a typed workflow stub created through `Workflow.newExternalWorkflowStub(Class, String)`.
`io.temporal.api.common.v1.WorkflowExecution`	`getExecution()`
`void`	`signal(java.lang.String signalName, java.lang.Object... args)`	Synchronously signals a workflow by invoking its signal handler.

- Method Detail
  - fromTyped
```
static <T> ExternalWorkflowStub fromTyped(T typed)
```
    Extracts untyped ExternalWorkflowStub from a typed workflow stub created through Workflow.newExternalWorkflowStub(Class, String).
    
    Type Parameters:
    
    T - type of the workflow stub interface
    
    Parameters:
    
    typed - typed external workflow stub
    
    Returns:
    
    untyped external workflow stub for the same workflow instance.
  - getExecution
```
io.temporal.api.common.v1.WorkflowExecution getExecution()
```
    Returns:
    
    workflow execution used to create this stub.
  - signal
```
void signal(java.lang.String signalName,
            java.lang.Object... args)
```
    Synchronously signals a workflow by invoking its signal handler. Usually a signal handler is a method annotated with SignalMethod.
    
    Parameters:
    
    signalName - name of the signal handler. Usually it is a method name.
    
    args - signal method arguments
    
    Throws:
    
    SignalExternalWorkflowException - if there is failure to signal the workflow.
  - cancel
```
void cancel()
```
    Request cancellation of the workflow execution.
  - cancel
```
void cancel(@Nullable
            java.lang.String reason)
```
    Request cancellation of the workflow execution with a reason.
    
    Parameters:
    
    reason - optional reason for cancellation.