FileSystemService.DerivedStreamProducer

Enclosing class:

FileSystemService
```
public static interface FileSystemService.DerivedStreamProducer
```
Used by getDerivedByteProvider() to produce a derivative stream from a source file.
The InputStream returned from the method needs to supply the bytes of the derived file and will be closed by the caller.
Example:
```
fsService.getDerivedByteProvider(
     containerFSRL, 
     null,
     "the_derived_file",
     -1,
     () -> new MySpecialtyInputstream(),
     monitor);
```
See produceDerivedStream().

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.io.InputStream`	`produceDerivedStream()`	Callback method intended to be implemented by the caller to `FileSystemService.getDerivedByteProvider(FSRL, FSRL, String, long, DerivedStreamProducer, TaskMonitor)`

- Method Detail
  - produceDerivedStream
```
java.io.InputStream produceDerivedStream()
                                  throws java.io.IOException,
                                         CancelledException
```
    Callback method intended to be implemented by the caller to FileSystemService.getDerivedByteProvider(FSRL, FSRL, String, long, DerivedStreamProducer, TaskMonitor)
    The implementation needs to return an InputStream that contains the bytes of the derived file.
    
    Returns:
    
    a new InputStream that will produce all the bytes of the derived file
    
    Throws:
    
    java.io.IOException - if there is a problem while producing the InputStream
    
    CancelledException - if the user canceled