class_docstr: Base class for Ufunc and FusedFunc.
code: def __init__(self, name, signatures):
      self.name = name
      self.signatures = []
      self.function_name_overrides = {}
  
      for header in signatures.keys():
          for name, sig in signatures[header].items():
              inarg, outarg, ret = self._parse_signature(sig)
              self.signatures.append((name, inarg, outarg, ret, header))
  
imports: import itertools
  import json
  import os
  from stat import ST_MTIME
  import argparse
  import re
  import textwrap
  import numpy
label_desc: Use image node_id 1 to create a new Func object  with example: obj = Func(name, signatures)