Renders the Mermaid ERD in the Viewer pane via
DiagrammeR::mermaid(). Colors are embedded as themeCSS in the
Mermaid %%{init}%% directive and render natively.
# S3 method for class 'cc_erd'
plot(x, ...)A cc_erd object returned by cc_erd()
Ignored
The DiagrammeR::mermaid() htmlwidget (invisibly)