code: def _ethos_u55_cascader(sram, enable_striping) -> Callable:
      # TODO(ekalda): Extract the flash info from ConstantPools once it is implemented
      flash = MemoryRegion(
          name="FLASH",
          size=10**7,
          read_bandwidth=4,
          write_bandwidth=4,
      )
  
      device_config = EthosuDeviceConfig(util.get_accelerator_config())
      cascader_options = CascaderOptions(
          cascade_region=sram,
          max_proposals=64,
          stripe_factors=5,
          max_plan_size=10,
          always_copy_size=1024,
          max_open_plans=8,
          max_closed_plans=32,
          enable_striping=enable_striping,
      )
      return _create_cascader(
          options=cascader_options,
          io_region=sram,
          constant_region=flash,
          working_regions=[sram],
          device_config=device_config,
      )
  
imports: from collections import defaultdict
  from typing import List, Callable
  from ethosu.vela import api
  import tvm
  from tvm import relay
  from tvm.relay.backend.contrib.ethosu.tir.compiler import LowerToTIR
  from tvm.relay.backend.contrib.ethosu.tir.scheduler import copy_constants
  from tvm.contrib.ethosu.cascader import cascade, EthosuDeviceConfig, CascaderOptions, MemoryRegion, extract_memory_info
  from tvm.relay.backend.contrib.ethosu.legalize import LegalizeEthosU
  from tvm.relay.backend.contrib.ethosu import tir_to_cs_translator, util, vela_api
  from tvm.relay.expr_functor import ExprMutator, ExprVisitor, Call
  from tvm.relay import expr
  from tvm.relay.backend.contrib.ethosu.op import op_attrs
  from tvm.relay.backend.contrib.ethosu import op
  from .None import _ffi_api
label_desc: Use image node_id 6 for calling a global function with example usage: _ethos_u55_cascader(sram, enable_striping) and returns: _create_cascader