<｜begin▁of▁sentence｜>### Instruction:
Using the 'PlotlyVerticesDrawer.PlotlyVerticesDrawer.draw' method in igraph, how can you draw the vertices of a simple undirected graph using a Kamada-Kawai layout and visualize it with Plotly?
### Response:
import igraph as ig
import plotly.graph_objects as go
from igraph.drawing.plotly_draw import PlotlyGraphDrawer

def draw_graph_vertices(graph, layout):
    plotly_drawer = PlotlyGraphDrawer()
    for vtx in range(graph.vcount()):
        visual_vertex = None  # Replace with visual properties if needed
        vertex = graph.vs[vtx]
        point = layout[vtx]
        coords = (point[0], point[1])
        plotly_drawer.draw_vertices(visual_vertex=visual_vertex, vertex=vertex, point=point, coords=coords)
    return plotly_drawer.get_elements()

# Example usage
# Create a simple undirected graph
g = ig.Graph(edges=[(0, 1), (1, 2), (2, 3)])
layout = g.layout('kk')
plot_elements = draw_graph_vertices(g, layout)

# Create a Plotly figure and add vertices
fig = go.Figure()
for element in plot_elements['vertices']:
    fig.add_trace(element)

fig.show()
<|EOT|>
