class_docstr: Class containing a list of trios, with extra functionality.
  
  :param trios: list of trio objects to include in pedigree
  :type trios: list of :class:`.Trio`
docstr: List of trio objects in this pedigree.
  
  :rtype: list of :class:`.Trio`
docstr_tok: ["List","of","trio","objects","in","this","pedigree",".",":","rtype",":","list","of",":","class",":","`",".Trio","`"]
code: def trios(self):
      """List of trio objects in this pedigree.
  
      :rtype: list of :class:`.Trio`
      """
      return self._trios
  
imports: import re
  from collections import Counter
  from hail.typecheck import typecheck_method, nullable, sequenceof
  from hail.utils.java import Env, FatalError, warning
label_desc: Use image node_id 6 for calling the Pedigree obj's underlying member method code with example usage: obj.trios() and returns: self