EmptyToNilMap returns a nil map if m is empty, otherwise it returns m.

EmptyToNilPtr returns a nil pointer if p points to a variable containing an empty value for V, otherwise it returns p.

EmptyToNilSlice returns a nil slice if s is empty, otherwise it returns s.

Sign computes a new signature for an environment (env) combined with an object containing values (sf) using a given key.

SignSteps adds signatures to each command step (and recursively to any command steps that are within group steps).

Verify verifies an existing signature against environment (env) combined with the keyset.

EnvNamespacePrefix is the string that prefixes all fields in the "env" namespace.

CommandStepWithInvariants is a CommandStep with PipelineInvariants.

SignedFielder describes types that can be signed and have signatures verified.