code: def _move_field(v1, v2, v1_key, v2_key=None):
      if v2_key is None:
          v2_key = v1_key
      if v1_key in v1:
          value = v1.pop(v1_key, None)
          if value is not None:
              v2[v2_key] = value
  
imports: import copy
  import logging
label_desc: Use image node_id 2 for calling a global function with example usage: _move_field(v1, v2, v1_key, v2_key) without return types