code: def reserved_info_field_set_fn(field_name):
      """Returns the callable that sets the proper field for the given field_name.
  
      Args:
        field_name: str. The field name of the reserved INFO field (e.g. 'MQ').
  
      Returns:
        The callable that takes in a Map(str --> ListValue), field name, and value
        and modifies the map to populate the field_name entry with the given value.
  
      Raises:
        ValueError: The field_name is not a known reserved INFO field.
      """
      try:
          return RESERVED_INFO_FIELD_SET_FNS[field_name]
      except KeyError:
          raise ValueError(
              "Unknown reserved INFO field: {}".format(field_name)
          )
  
file_path: deepvariant/third_party/nucleus/util/vcf_constants.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import functools
  from third_party.nucleus.protos import variants_pb2
  from third_party.nucleus.util import struct_utils
label_desc: Use image node_id 6 for calling a global function with example usage: reserved_info_field_set_fn(field_name) and returns: RESERVED_INFO_FIELD_SET_FNS