Add a custom Button to ModeBar

[Nuthin2do]

Hey guys, i need some help with the configuration of the ModeBar. I want to add a new custom Button, but i don't get what the 'click' Parameter in ModeBarButtonsToAdd expects. According to the JS documentation ( -> https://plotly.com/javascript/configuration-options/#add-buttons-to-modebar) it needs a function, but how would that look like in C#?

This is what i got so far for the configuration:

<PlotlyChart style="height: 70vh; min-height: 350px" @ref="_Chart" @bind-Config="_Config" @bind-Layout="_Layout" @bind-Data="_Data" />

@code
{
    [CascadingParameter]
    private MudTheme Theme { get; set; }
    
    private PlotlyChart _Chart;
    private Config _Config;
    private Layout _Layout;
    private IList<ITrace> _Data;

    protected override void OnInitialized()
    {
        _Config = new Config
        {
            DisplayLogo = false,
            ModeBarButtonsToRemove = new[]
            {
                "lasso2d",
                "select2d"
            },
            DisplayModeBar = DisplayModeBarEnum.True,
            ModeBarButtonsToAdd = new[]
            {
                new
                {
                    name = "TestButton",
                    icon = Icons.Material.Filled.Agriculture,
                    click = // to be filled
                }
            }
            
        }; 
        
        _Data = new List<ITrace>
        {
            new Scatter
            {
                Name = "DeviceChartLine",
                Line = new Line
                {
                    Simplify = false
                },
                Mode = ModeFlag.Lines | ModeFlag.Markers,
                X = new List<object>(),
                Y = new List<object>()
            }
        };
        
        _Layout = new Layout
        {
            Title = new Title
            {
                Text = "Test"
            },
            XAxis = new[]
            {
                new XAxis()
            },
            YAxis = new[]
            {
                new YAxis()
            }
        };
        
        base.OnInitialized();
    }