AssertFirstValueResult returns a pointer to the first value in the specified slice of values.

AssertSinglePtrResult returns the single non-nil pointer value in the specified slice.

AssertSingleValueResult returns a pointer to the single value in the specified slice of values.

NotFound returns true if the error represents a "resource not found" condition.

SetLastError sets the LastError field on the error if supported.

TimedOut returns true if the error represents a "wait timed out" condition.

FoundFunc is function that returns false if the specified value causes a `NotFound` error to be returned.