class_docstr: Haplotype-based variant labeler.
class_docstr_tok: ["Haplotype-based","variant","labeler","."]
docstr: Gets the LabelingMetrics proto tracking metrics for this labeler.
code: def metrics(self):
      """Gets the LabelingMetrics proto tracking metrics for this labeler."""
      return self._metrics
  
imports: import collections
  import copy
  import enum
  import heapq
  import itertools
  from absl import logging
  from deepvariant.labeler import variant_labeler
  from deepvariant.protos import deepvariant_pb2
  from third_party.nucleus.io import fasta
  from third_party.nucleus.util import ranges
  from third_party.nucleus.util import variant_utils
  from third_party.nucleus.util import variantcall_utils
label_desc: Use image node_id 3 for calling the HaplotypeLabeler obj's underlying member method code with example usage: obj.metrics() and returns: self