Function extract_symbolic_data 

pub fn extract_symbolic_data<T>(content: &T) -> SymbolicData
where
    T: AsRef<[u8]> + ?Sized,

Scan an IFC file for IfcGrid and any product carrying a Plan / Annotation / FootPrint / Axis representation, and return the full symbolic primitive collection. Pure-Rust (no wasm_bindgen), so it works inside the HTTP server.