class_docstr: Create a callable object from a dask graph.
  
  Parameters
  ----------
  dsk : dict
      A dask graph
  outkey : hashable
      The output key from the graph
  inkeys : list
      A list of keys to be used as arguments to the callable.
  name : str, optional
      The name to use for the function.
class_docstr_tok: ["Create","a","callable","object","from","a","dask","graph",".","Parameters","--","--","--","--","--","dsk",":","dict","A","dask","graph","outkey",":","hashable","The","output","key","from","the","graph","inkeys",":","list","A","list","of","keys","to","be","used","as","arguments","to","the","callable",".","name",":","str",",","optional","The","name","to","use","for","the","function","."]
code: def __init__(self, dsk, outkey, inkeys, name="subgraph_callable"):
      self.dsk = dsk
      self.outkey = outkey
      self.inkeys = inkeys
      self.name = name
  
imports: import math
  import numbers
  from enum import Enum
  from flash.core.serve.dag.task import flatten, get, get_dependencies, ishashable, istask, reverse_dict, subs, toposort
  from flash.core.serve.dag.utils import key_split
  from flash.core.utilities.imports import _TOPIC_SERVE_AVAILABLE
label_desc: Use image node_id 1 to create a new SubgraphCallable object  with example: obj = SubgraphCallable(dsk, outkey, inkeys, name)