exec_streamer_builder.go
func (e *execStreamerBuilder) StderrPrefix(prefix string) ExecStreamerBuilder {
	e.d.StderrPrefix = prefix
	return e
}
func (e *execStreamerBuilder) StderrPrefix(prefix string) ExecStreamerBuilder {
	e.d.StderrPrefix = prefix
	return e
}
//StderrPrefix sets the StderrPrefix