code: def copy_to_device(self, device: str) -> LazyBuffer:
      # no COPY
      if self.device == device:
          return self
  
      # double COPY = one COPY
      if (
          self.st.contiguous
          and self.size == self.base.size
          and not self.base.realized
          and self.base.op is LoadOps.COPY
      ):
          return (
              self.base.srcs[0]
              .copy_to_device(device)
              .reshape(self.st.shape)
          )
  
      # const doesn't have to be copied (issues with disk tensor)
      if self.is_unrealized_const():
          return LazyBuffer.loadop(
              LoadOps.CONST,
              tuple(),
              self.dtype,
              device,
              arg=self.base.arg,
          )._view(self.st)
  
      # if it's a shrink, do the shrink before the copy with CONTIGUOUS
      if prod(self.st.shape) < prod(self.base.st.shape):
          return LazyBuffer.loadop(
              LoadOps.COPY,
              self.shape,
              self.dtype,
              device,
              src=self.contiguous(),
          )
  
      # copy the base and apply the shapetracker on the new device
      return LazyBuffer.loadop(
          LoadOps.COPY,
          self.base.shape,
          self.dtype,
          device,
          src=self.base,
      )._view(self.st)
  
imports: from __future__ import annotations
  import sys, math
  from collections import defaultdict
  from typing import Union, Optional, Any, Tuple, List, Set, Dict, DefaultDict, cast
  from tinygrad.dtype import dtypes, DType, ImageDType
  from tinygrad.helpers import prod, flatten, getenv, dedup, DEBUG, all_int, all_same, GRAPH
  from tinygrad.ops import LoadOps, UnaryOps, BinaryOps, TernaryOps, ReduceOps, BufferOps, Op, LazyOp, ConstBuffer, MemBuffer, ScheduleItem
  from tinygrad.shape.symbolic import sint, Variable
  from tinygrad.shape.shapetracker import ShapeTracker
  from tinygrad.device import Buffer
  from tinygrad.graph import log_lazybuffer
  from weakref import ref, ReferenceType
label_desc: Use image node_id 12 for calling the LazyBuffer obj's underlying member method code with example usage: obj.copy_to_device(device) and returns: LazyBuffer, self, self, LazyBuffer, LazyBuffer