Function lysp_feature_next 

pub unsafe extern "C" fn lysp_feature_next(
    last: *const lysp_feature,
    pmod: *const lysp_module,
    idx: *mut u32,
) -> *mut lysp_feature

@brief Get the next feature in the module or submodules.

@param[in] last Last returned feature. @param[in] pmod Parsed module and submodules whose features to iterate over. @param[in,out] idx Submodule index, set to 0 on first call. @return Next found feature, NULL if the last has already been returned.