func ListBlock(apiClient pfs.ApiClient, shard uint64, modulus uint64) ([]*pfs.BlockInfo, error) {
blockInfos, err := apiClient.ListBlock(
context.Background(),
&pfs.ListBlockRequest{
Shard: &pfs.Shard{
Number: shard,
Modulo: modulus,
},
},
)
if err != nil {
return nil, err
}
return blockInfos.BlockInfo, nil
}