Class for marking constraints and excluded volumes in the Workspace. 
  Along with the marker, optional labels are also drawn.
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          | __init__(self) x.__init__(...) initializes x; see help(type(x)) for signature
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          | _workspaceDrawCallback(self) Called by Maestro when Workspace needs to be drawn.
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          | clear(self) Remove all added labels.
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          | add(self,
        center=None,
        radius=None,
        atom=None,
        color=None,
        name=None,
        opacity=0.8) Add another marker to draw.
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          | show(self) Show the markers in the Workspace.
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          | hide(self) Hide the markers from the Workspace.
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          | setVisible(self,
        visible) Show the markers if "visible" is True, hide otherwise.
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          | showLabels(self) Enable labels.
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          | hideLabels(self) Disable labels.
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          | setLabelsVisible(self,
        visible) Show the labels if "visible" is True, hide otherwise.
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          | _requestRedraw(self) Request Maestro to redraw the Workspace.
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    | Inherited from object:__delattr__,__format__,__getattribute__,__hash__,__new__,__reduce__,__reduce_ex__,__repr__,__setattr__,__sizeof__,__str__,__subclasshook__ |