private final ExecutorSupplier mExecutorSupplier;
private Core() {
this.mExecutorSupplier = new DefaultExecutorSupplier();
}
public static Core getInstance() {
<BUG>if(sInstance == null){

sInstance = new Core();
}</BUG>
return sInstance;

private final ExecutorSupplier mExecutorSupplier;
private Core() {
this.mExecutorSupplier = new DefaultExecutorSupplier();
