EL::OutputStream Node1 EL::OutputStream + optType + optMergeCmd + optContainerSuffix - m_label - m_options - m_output + testInvariant() + OutputStream() + OutputStream() + OutputStream() + OutputStream() + ~OutputStream() + operator=() + swap() + label() + label() + options() + options() + output() + output() - ClassDef() Node2 TObject Node2->Node1