Node-graph form. nodes/edges form the DAG; statements is the ordered
list of effect-node ids (SetAttribute/SetVariable) that drive side effects;
variables declares local variables visible to VariableGet/VariableSet
(same shape as ExpressionGraph.variables).
Node-graph form.
nodes/edgesform the DAG;statementsis the ordered list of effect-node ids (SetAttribute/SetVariable) that drive side effects;variablesdeclares local variables visible to VariableGet/VariableSet (same shape asExpressionGraph.variables).