How to use the robosuite.models.tasks.UniformRandomSampler function in robosuite

self.table_friction = table_friction

        # whether to use ground-truth object states
        self.use_object_obs = use_object_obs

        # number of objects to initialize on table
        self._num_objects = num_objects

        # reward configuration
        self.reward_shaping = reward_shaping

        # object placement initializer
        if placement_initializer:
            self.placement_initializer = placement_initializer
        else:
            self.placement_initializer = UniformRandomSampler(
                x_range=[-0.3, 0.3],
                y_range=[-0.3, 0.3],
                ensure_object_boundary_in_range=False,
                z_rotation=True,
            )

        super().__init__(
            gripper_type=gripper_type,
            gripper_visualization=gripper_visualization,
            use_indicator_object=use_indicator_object,
            has_renderer=has_renderer,
            has_offscreen_renderer=has_offscreen_renderer,
            render_collision_mesh=render_collision_mesh,
            render_visual_mesh=render_visual_mesh,
            control_freq=control_freq,
            horizon=horizon,