code: def empty_graph(n=0, create_using=None, default=nx.Graph):
      n, nodes = _number_and_nodes(n)
      graph_class, inplace = _create_using_class(
          create_using, default=default
      )
      G = graph_class.from_coo(
          n,
          cp.empty(0, index_dtype),
          cp.empty(0, index_dtype),
          id_to_key=nodes,
      )
      if inplace:
          return create_using._become(G)
      return G
  
imports: import itertools
  from numbers import Integral
  import cupy
  import networkx
  import numpy
  import nx_cugraph
  from ..utils import _get_int_dtype, index_dtype, networkx_algorithm
  from ._utils import _IS_NX32_OR_LESS, _common_small_graph, _complete_graph_indices, _create_using_class, _ensure_int, _ensure_nonnegative_int, _number_and_nodes
label_desc: Use image node_id 6 for calling a global function with example usage: empty_graph(n, create_using, default) and returns: G, create_using