new Timeline(container, clock)
    The Timeline is a widget for displaying and controlling the current scene time.
    Parameters:
| Name | Type | Description | 
|---|---|---|
| container | Element | The parent HTML container node for this widget. | 
| clock | Clock | The clock to use. | 
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Members
container :Element
    Gets the parent container.
    Type:
- Element
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Methods
destroy()
    Destroys the widget.  Should be called if permanently
removing the widget from layout.
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isDestroyed() → {Boolean}
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Returns:
    true if the object has been destroyed, false otherwise.
- Type
- Boolean
resize()
    Resizes the widget to match the container size.
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zoomTo(startTime, stopTime)
    Sets the view to the provided times.
    Parameters:
| Name | Type | Description | 
|---|---|---|
| startTime | JulianDate | The start time. | 
| stopTime | JulianDate | The stop time. | 
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