in src/braket/ocean_plugin/braket_sampler.py [0:0]
def _access_optimized_edgelist(self) -> FrozenDict[int, FrozenSet[int]]:
"""FrozenDict[int, FrozenSet[int]]: FrozenDict of active couplers for the solver.
Returning a frozen dict allows for near constant existence checks.
"""
edges = defaultdict(set)
for (u, v) in self.properties["couplers"]:
edges[u].add(v)
edges[u] = frozenset(edges[u])
return FrozenDict(edges)