pub unsafe extern "C" fn lgraph_api_graph_db_alter_vertex_label_add_fields(
graphdb: *mut lgraph_api_graph_db_t,
label: *const c_char,
add_fields: *const *const lgraph_api_field_spec_t,
add_fields_len: usize,
default_values: *const *const lgraph_api_field_data_t,
default_values_len: usize,
n_modified: *mut usize,
errptr: *mut *mut c_char,
) -> bool