Plot a polygon given coordinates of its vertices. # Arguments `x` - x coordinates of the vertices `y` - y coordinates of the vertices `options` - Array of PlotOption<&str> controlling the appearance of the plot element. The relevant options are: * `Caption` - Specifies the caption for this dataset. Use an empty string to hide it (default). * `FillAlpha` - Sets the transparency of the filled regio
( &'l mut self, x: X, y: Y, options: &[PlotOption<&str>], )
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