plot_geometry(
     (Point3D(5, 5, 5), "center"),
     (Line3D(Point3D(-2, -3, -4), Point3D(2, 3, 4)), "line"),
     (Plane((0, 0, 0), (1, 1, 1)),
         (x, -5, 5), (y, -4, 4), (z, -10, 10)))
# Expected:
## Plot object containing:
## [0]: geometry entity: Point3D(5, 5, 5)
## [1]: geometry entity: Line3D(Point3D(-2, -3, -4), Point3D(2, 3, 4))
## [2]: plane series: Plane(Point3D(0, 0, 0), (1, 1, 1)) over (x, -5, 5), (y, -4, 4), (z, -10, 10)