public E peek() { return firstDataItem(); }
public E peek() { return firstDataItem(); }
public E peek() { return firstDataItem(); }
public E peek() { return firstDataItem(); }
public E peek() { return firstDataItem(); }
public E peek() { return firstDataItem(); }
public E peek() { return firstDataItem(); }
public E peek() { return firstDataItem(); }
public E peek() { return firstDataItem(); }
public E peek() { return firstDataItem(); }