ExtendNode        247 courgette/adjustment_method.cc     ExtendNode(node, p_trace_);
ExtendNode        256 courgette/adjustment_method.cc     ExtendNode(node, p_trace_);
ExtendNode        286 courgette/adjustment_method.cc     ExtendNode(m_node, m_trace_);
ExtendNode        504 courgette/adjustment_method.cc     ExtendNode(m_parent, m_trace_);