code: def _get_unique_subgraph_name(subgraph_name):
      attrs = current_attribute()._attr
      if attrs.get("__subgraph_name__", "") != "":
          subgraph_name = "".join(
              [attrs["__subgraph_name__"], "$", subgraph_name]
          )
      AttrScope._subgraph_names[subgraph_name] += 1
      subgraph_name = subgraph_name + str(
          AttrScope._subgraph_names[subgraph_name] - 1
      )
      return subgraph_name
  
imports: import math
  import ctypes
  import copy
  from .random import uniform
  from .symbol import Symbol
  from .None import symbol
  from ..base import _LIB, check_call
  from ..base import SymbolHandle, _as_list
  from ..attribute import AttrScope, current
label_desc: Use image node_id 7 for calling a global function with example usage: _get_unique_subgraph_name(subgraph_name) and returns: subgraph_name