Function geos_sys::GEOSSTRtree_nearest_generic

pub unsafe extern "C" fn GEOSSTRtree_nearest_generic(
    tree: *mut GEOSSTRtree, 
    item: *mut c_void, 
    itemEnvelope: *const GEOSGeometry, 
    distancefn: GEOSDistanceCallback, 
    userdata: *mut c_void
) -> *mut c_void