code: def to_backend(x: Array, backend: str | None = None, **kwargs):
      """Move an Array collection to a new backend
  
      Parameters
      ----------
      x : Array
          The input Array collection.
      backend : str, Optional
          The name of the new backend to move to. The default
          is the current "array.backend" configuration.
  
      Returns
      -------
      dask.Array
          A new Array collection with the backend specified
          by ``backend``.
      """
      # Get desired backend
      backend = backend or array_creation_dispatch.backend
      # Check that "backend" has a registered entrypoint
      backend_entrypoint = array_creation_dispatch.dispatch(backend)
      # Call `ArrayBackendEntrypoint.to_backend`
      return backend_entrypoint.to_backend(x, **kwargs)
  
imports: from __future__ import annotations
  import itertools
  from collections.abc import Sequence
  from functools import partial
  from itertools import product
  from numbers import Integral, Number
  import numpy
  from tlz import sliding_window
  from dask.array import chunk
  from dask.array.backends import array_creation_dispatch
  from dask.array.core import Array, asarray, block, blockwise, broadcast_arrays, broadcast_to, concatenate, normalize_chunks, stack
  from dask.array.numpy_compat import AxisError
  from dask.array.ufunc import greater_equal, rint
  from dask.array.utils import meta_from_array
  from dask.array.wrap import empty, full, ones, zeros
  from dask.base import tokenize
  from dask.highlevelgraph import HighLevelGraph
  from dask.utils import cached_cumsum, derived_from, is_cupy_type
label_desc: Use image node_id 1 for calling a global function with example usage: to_backend(x, backend) and returns: backend_entrypoint