Display Mermaid diagram from C# variable in Polyglot notebook

I know that Polyglot notebooks support Mermaid diagrams. But it doesn't support veriable sharing. Suppose I have diagram code in C# string variable. Are there any possibility to display that string as diagram?

Example:

// below diagram code was generated via some method
var mermaidCode = """
flowchart TD
    A --> B
""";

// here I would like to display mermaidCode as diagram
mermaidCode

Here is a way that generates a Mermaid output cell by means of a MermaidMarkdown display object:

#r "Microsoft.DotNet.Interactive.Mermaid.dll"
using Microsoft.DotNet.Interactive.Mermaid;

var mermaidCode = """
flowchart TD
    A --> B
""";

new MermaidMarkdown(mermaidCode)