Given this code, where we load a lot of data, write it to a file, and then run an exe.. 

```
void myMethod() {
    Map stuff = createMap(); //Consumes 250 MB memory
    File file = createFileInput(stuff); //Create input for exe
    runExectuable(file); //Run Windows exe
}

```

What is the best way to release the memory consumed by `stuff` prior to running the exe? We don't need this in memory any more as we have dumped the data to a file for input to the exe... 

Is the best method to just set `stuff = null` prior to `runExecutable(file)`?