Returns the map of all call nodes. The key of the map is the id of a node.
from glider import*defquery():# Query first contract contracts =Contracts().exec(1)# Get all call nodes from the contract's call graph call_nodes = contracts[0].call_graph().nodes()# print all call nodes' corresponding function namesfor node_id in call_nodes:print(call_nodes[node_id].callable_name())return []