Apply a stroke pattern to the previously drawn vector object.
Source
GraphicsCommandStrokePattern strokePattern(GraphicsPattern pattern, [
num width = 1.0,
JointStyle jointStyle = JointStyle.MITER,
CapsStyle capsStyle = CapsStyle.NONE]) {
var command = new GraphicsCommandStrokePattern(pattern, width, jointStyle, capsStyle);
this.addCommand(command);
return command;
}