code: def get_formats(function_types=None):
      '''
      Returns the available formats mapped to display name.
  
      This is returned as an ordered dictionary, with the most common
      at the top, followed by the rest in alphabetical order
  
      If a list is specified for function_types, only those formats
      supporting the given function types will be returned.
      '''
  
      if function_types is None:
          return {k: v['display'] for k, v in _converter_map.items()}
  
      ftypes = [x.lower() for x in function_types]
      ftypes = set(ftypes)
      ret = []
  
      for fmt, v in _converter_map.items():
          if v['valid'] is None or ftypes <= v['valid']:
              ret.append(fmt)
      return ref get_formats(function_types=None):
      '''
      Returns the available formats mapped to display name.
  
      This is returned as an ordered dictionary, with the most common
      at the top, followed by the rest in alphabetical order
  
      If a list is specified for function_types, only those formats
      supporting the given function types will be returned.
      '''
  
      if function_types is None:
          return {k: v['display'] for k, v in _converter_map.items()}
  
      ftypes = [x.lower() for x in function_types]
      ftypes = set(ftypes)
      ret = []
  
      for fmt, v in _converter_map.items():
          if v['valid'] is None or ftypes <= v['valid']:
              ret.append(fmt)
      return ret
docs: Returns the available formats mapped to display name.
  
      This is returned as an ordered dictionary, with the most common
      at the top, followed by the rest in alphabetical order
  
      If a list is specified for function_types, only those formats
      supporting the given function types will be returned.