ErrIfMissingRunRequirement returns an error when a command or its parent doesn't meet a requirement; for example, an on-prem command shouldn't be used by a cloud user.

ExecuteCommand runs the root command with the given args, and returns the Cobra command output and the standard output as strings, or returns an error.

NewValidArgsFunction is a wrapper around `cobra.ValidArgsFunction()` that ignores the `toComplete` argument and `ShellCompDirective` return value, which are almost always ignored and "NoFileComp", respectively.

RegisterFlagCompletionFunc is a wrapper around `cobra.RegisterFlagCompletionFunc()` that ignores the `toComplete` argument and `ShellCompDirective` return value, which are almost always ignored and "NoFileComp", respectively.

PreRun is the standard PreRunner implementation.

PreRun is a helper class for automatically setting up Cobra PersistentPreRun commands.