PlantUml diagrams not displayed

[idormenco]

Installed product versions

Microsoft Visual Studio Professional 2019
Version 16.10.4

Description

PlantUml suport

Current behavior

when previewing in Visual Studio a PlantUml no diagram is rendered

@startuml
Alice -> Bob: Authentication Request
Bob --> Alice: Authentication Response

Alice -> Bob: Another authentication Request
Alice <-- Bob: Another authentication Response
@enduml

Expected behavior

a diagram is rendered.

Is there any plans to support this type of diagrams ?
Are there any alternative extensions which support PlantUml ?