code: def create_sub_kernel(
      self, *groups, index_dtype, mutations, reduction_hint
  ):
      sub_kernel = TritonKernel(
          *groups,
          index_dtype=index_dtype,
          mutations=mutations,
          pid_cache={
              "tl.program_id(0)": "xpid_offset",
              "tl.program_id(1)": "ypid",
          },
          reduction_hint=reduction_hint,
      )
      if self.blocking_2d:
          assert len(groups) == 3
  
      self.blocking_2d |= groups[1] != 1 and len(groups) == 3
      metrics.generated_kernel_count -= 1
      sub_kernel.args = self.args
      sub_kernel.iter_vars_count = self.iter_vars_count
      sub_kernel.cse.iter_buffer_ids = self.cse.iter_buffer_ids
      self.sub_kernels.append(sub_kernel)
      return sub_kernel
  
imports: import itertools
  from collections import defaultdict
  from dataclasses import dataclass
  from typing import Dict, List, Tuple
  from sympy import Integer
  from ..None import metrics
  from ..scheduler import SchedulerNode
  from ..utils import ceildiv, Placeholder
  from ..virtualized import V
  from .common import IndentedBuffer, Kernel
  from .triton import TritonKernel
  from .triton_utils import config_of, signature_to_meta
label_desc: Use image node_id 7 for calling the ForeachKernel obj's underlying member method code with example usage: obj.create_sub_kernel() and returns: sub_kernel