/// Checks the widget validity. By default, it returns true.
/// \param thePrs a selected presentation in the view
/// \return a boolean value
/// Checks the widget validity. By default, it returns true.
/// \param thePrs a selected presentation in the view
/// \return a boolean value
/// Return an object and geom shape by the viewer presentation
/// \param thePrs a selection
/// \param theObject an output object
/// \param theShape a shape of the selection
/// Return an object and geom shape by the viewer presentation
/// \param thePrs a selection
/// \param theObject an output object
/// \param theShape a shape of the selection