using ComputedQueryFn = function_ref<bool(ValuePort)>;
using ValueQueryFn = function_ref<Attribute(const ValuePort&)>;
using ValuePortInputs = SmallVectorImpl<ValuePort>;

// Note: Following implements the rank 1 pack op case so could be
// generalized.
//
// Maps the specified component in the `port` of the given op's result to one of
// the element in the input.

de-Encryption-S3-Sealed-Key":"IAAfAM53Mqv8sYEKuB/E9x8I+82r13CtJNFLuVsrTJmLg/gw==","X-Minio-Internal-Server-Side-Encryption-Seal-Algorithm":"DAREv2-HMAC-SHA256","content-type":"application/octet-stream"}},{"Bucket":"buck1","Name":"go_113/src/cmd/pack/pack.go","UserDef":{"X-Minio-Internal-Server-Side-Encryption-Iv":"zuC5hgU9swIpM996VvTE/1jI/Zq2miYzmFT/5J4=","X-Minio-Internal-Server-Side-Encryption-S3-Kms-Key-Id":"my-minio-key","X-Minio-Internal-Server-Side-Encryption-S3-Kms-Sealed-Key":"IAAfAJhd+D...