@startuml

actor bob
participant pyecharts
participant lml
participant "jupyter-echarts-pypkg"
participant "echarts-china-cities-pypkg"
participant "echarts-countries-pypkg"

bob -> pyecharts : > draw world map
pyecharts -> lml : scan for plugins.
lml -> pyecharts: 3 packages found
pyecharts -> "jupyter-echarts-pypkg" : read registry.json
"jupyter-echarts-pypkg" --> pyecharts: here is my extension profile
pyecharts -> "echarts-china-cities-pypkg" : read registry.json
"echarts-china-cities-pypkg" --> pyecharts: here is my extension profile
pyecharts -> "echarts-countries-pypkg" : read registry.json
"echarts-countries-pypkg" --> pyecharts: here is my extension profile
"jupyter-echarts-pypkg" -> pyecharts: here is the world map
pyecharts -> bob: world map
@enduml