docs: def annotate_variant(variant, var_obj=None):
      """Annotate a cyvcf variant with observations
      
      Args:
          variant(cyvcf2.variant)
          var_obj(dict)
      
      Returns:
          variant(cyvcf2.variant): Annotated variant
      """
      if var_obj:
      
          variant.INFO['Obs'] = var_obj['observations']
          if var_obj.get('homozygote'):
              variant.INFO['Hom'] = var_obj['homozygote']
          if var_obj.get('hemizygote'):
              variant.INFO['Hem'] = var_obj['hemizygote']
      
      return variant