Function render_entity_html 

pub fn render_entity_html(
    instance: &SandboxInstance,
    tx: &ReadOnlyTransaction,
    obj: &Value,
) -> Result<(String, String)>

Generates HTML for the given object using a specified template.

Arguments

• instance - Reference to the CachedInstance containing class specifications.
• tx - Read-only transaction for accessing repository data.
• obj - JSON object representing the data to be rendered.

Returns

A String containing the rendered HTML if the class has an HTML body; otherwise, returns an empty string.

The function sets up a rendering environment, prepares the renderer, and attempts to render the template with the provided data.