pub unsafe extern "C" fn lgraph_api_vertex_iterator_get_fields_by_names(
it: *mut lgraph_api_vertex_iterator_t,
field_names: *const *const c_char,
field_names_len: usize,
field_data: *mut *mut *mut lgraph_api_field_data_t,
errptr: *mut *mut c_char,
) -> usize