pub unsafe extern "C" fn lgraph_api_graph_db_add_edge_label(
graphdb: *mut lgraph_api_graph_db_t,
label: *const c_char,
fds: *const *const lgraph_api_field_spec_t,
fds_len: usize,
temporal_field: *const c_char,
first_edge_constraints: *const *const c_char,
second_edge_constraints: *const *const c_char,
edge_constraints_len: usize,
errptr: *mut *mut c_char,
) -> bool