code: def reserved_filter_field(field_id):
      """Returns the reserved FILTER field with the given ID."""
      return _get_reserved_field(field_id, RESERVED_FILTER_FIELDS)
  
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 2 for calling a global function with example usage: reserved_filter_field(field_id) and returns: _get_reserved_field