old_contents: #from dataclasses import dataclass
  from collections import namedtuple
  
  VALID_PEAKTYPES = ["narrow", "broad"]
  
  # @dataclass
  # class Antibody:
  #     """
  #     ChIP-seq antibody
  #     """
  #     name: str
  #     # call narrow or broad peaks
  #     peaktype: str
  #     # remove duplicates?
  #     rmdup: bool = True
  
  #     def __post_init__(self):
  #         if self.peaktype not in VALID_PEAKTYPES:
  #             raise TypeError(f"peaktype {self.peatktype} is not one of {VALID_PEAKTYPES}")
  
  Antibody = namedtuple('Antibody', 'name peaktype rmdup')
  
  _ANTIBODIES = [
      Antibody("h3f3a", "broad", True),
      Antibody("h3k27me3", "broad", True),
      Antibody("h3k36me3", "broad", True),
      Antibody("h3k4me1", "broad", True),
      Antibody("h3k79me2", "broad", True),
      Antibody("h3k79me3", "broad", True),
      Antibody("h3k9me1", "broad", True),
      Antibody("h3k9me2", "broad", True),
      Antibody("h4k20me1", "broad", True),
      Antibody("h2afz", "narrow", True),
      Antibody("h3ac", "narrow", True),
      Antibody("h3k27ac", "narrow", True),
      Antibody("h3k4me2", "narrow", True),
      Antibody("h3k4me3", "narrow", True),
      Antibody("h3k9ac", "narrow", True),
      Antibody("h3k9me3", "broad", False)
  ]
  
  ANTIBODIES = {x.name: x for x in _ANTIBODIES}
  SUPPORTED_ANTIBODIES = {x.name for x in _ANTIBODIES}
  
new_contents: #from dataclasses import dataclass
  from collections import namedtuple
  
  VALID_PEAKTYPES = ["narrow", "broad"]
  
  # @dataclass
  # class Antibody:
  #     """
  #     ChIP-seq antibody
  #     """
  #     name: str
  #     # call narrow or broad peaks
  #     peaktype: str
  #     # remove duplicates?
  #     rmdup: bool = True
  
  #     def __post_init__(self):
  #         if self.peaktype not in VALID_PEAKTYPES:
  #             raise TypeError(f"peaktype {self.peatktype} is not one of {VALID_PEAKTYPES}")
  
  Antibody = namedtuple('Antibody', 'name peaktype rmdup')
  
  _ANTIBODIES = [
      Antibody("h3f3a", "broad", True),
      Antibody("h3k27me3", "broad", True),
      Antibody("h3k36me3", "broad", True),
      Antibody("h3k4me1", "broad", True),
      Antibody("h3k79me2", "broad", True),
      Antibody("h3k79me3", "broad", True),
      Antibody("h3k9me1", "broad", True),
      Antibody("h3k9me2", "broad", True),
      Antibody("h4k20me1", "broad", True),
      Antibody("h2afz", "narrow", True),
      Antibody("h3ac", "narrow", True),
      Antibody("h3k27ac", "narrow", True),
      Antibody("h3k4me2", "narrow", True),
      Antibody("h3k4me3", "narrow", True),
      Antibody("h3k9ac", "narrow", True),
      Antibody("h3k9me3", "broad", False),
      Antibody("broad", "broad", False),
      Antibody("narrow", "narrow", True)
  ]
  
  ANTIBODIES = {x.name: x for x in _ANTIBODIES}
  SUPPORTED_ANTIBODIES = {x.name for x in _ANTIBODIES}
  
subject: Add 'broad' and 'narrow' as generic antibodies.