Deferred (sdk-common 0.9.2 API)

```
public interface Deferred<T>
```
Interface to define interaction with deferred results.
Implementations of this class are provided by Syscalls and should not be overriden/wrapped.
To resolve a Deferred, use Syscalls.resolveDeferred(Deferred, SyscallCallback)

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  boolean isCompleted()
  
  @Nullable Result<T> toResult()

- Method Detail
  - isCompleted
```
boolean isCompleted()
```
  - toResult
```
@Nullable Result<T> toResult()
```
    Returns:
    
    null if isCompleted() is false.