code: def _compute_depth_histogram(single_var_stats):
      """Compute a histogram on the depth, with larger bins as depth increases."""
      depths = [
          v.depth
          for v in single_var_stats
          if not isinstance(v.depth, list)
      ]
      return _get_integer_counts(depths)
  
imports: import collections
  import itertools
  import math
  import numpy
  from third_party.nucleus.util import variant_utils
  from third_party.nucleus.util import variantcall_utils
  from deepvariant import vcf_stats_vis
label_desc: Use image node_id 15 for calling a global function with example usage: _compute_depth_histogram(single_var_stats) and returns: _get_integer_counts