code: def import_and_transform_gvcf(path):
      mt = setup(path)
      vds = transform_gvcf(mt, [])
      vds.reference_data._force_count_rows()
      vds.variant_data._force_count_rows()
  
file_path: hail/benchmark/python/benchmark_hail/run/combiner_benchmarks.py
imports: import os.path
  from tempfile import TemporaryDirectory
  import hail
  from hail.vds.combiner import combine_variant_datasets, new_combiner, transform_gvcf
  from hail.vds.combiner.combine import combine_gvcfs, calculate_even_genome_partitioning
  from .resources import empty_gvcf, single_gvcf, chr22_gvcfs
  from .utils import benchmark
label_desc: Use image node_id 6 for calling a global function with example usage: import_and_transform_gvcf(path) without return types