Function pio_value_geo_layer 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn pio_value_geo_layer(
    value: *const PioValueHandle,
    error: *mut *mut PioError,
) -> *mut PioGeoLayer

Take the value as a geographic layer handle. The layer is copied out of the value, so the handle outlives the module the way pio_geo_layer_parse produces one.

Safety

Pointers and handles must satisfy the crate-level safety requirements.