code: def _merge_list(a: List, b: List) -> List:
      """Combines 2 lists in 1 and returns it.
  
      Warning: it modifies arguments.
      """
      # Extend the larger list for performance reasons.
      if len(a) >= len(b):
          a.extend(b)
          return a
      b.extend(a)
      return b
  
imports: import abc
  import copy
  from dataclasses import dataclass
  from typing import Any, List, Optional, Tuple
  import numpy
  import math
  import pipeline_dp
  from pipeline_dp import budget_accounting
  from pipeline_dp import dp_computations
  from analysis import metrics
  from analysis import poisson_binomial
  from pipeline_dp import partition_selection
label_desc: Use image node_id 2 for calling a global function with example usage: _merge_list(a, b) and returns: b, a