code: def to_struct(item):
      from .models import Base
  
      if isinstance(item, Base):
          return item.to_struct()
      return item
  
imports: from __future__ import absolute_import
  from collections import defaultdict
  import six
  from .None import errors
  from .fields import NotSet
label_desc: Use image node_id 5 for calling the ListBuilder obj's underlying member method code with example usage: obj.to_struct(item) and returns: item, item