code: def has_full_genotypes(variant_call):
      """Returns True iff the VariantCall has only known genotypes.
  
      Args:
        variant_call: VariantCall proto. The VariantCall to evaluate.
  
      Returns:
        True if all `genotype` fields are known genotypes.
      """
      return all(gt >= 0 for gt in variant_call.genotype)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from third_party.nucleus.protos import struct_pb2
  from third_party.nucleus.protos import variants_pb2
  from third_party.nucleus.util import struct_utils
  from third_party.nucleus.util import vcf_constants
label_desc: Use image node_id 17 for calling a global function with example usage: has_full_genotypes(variant_call) and returns: all