code: def __copy__(self):
      ret = self.__class__()
      ret.functions = self.functions
      ret.variables = self.variables
      ret.global_resource = self.global_resource
      return ret
  
imports: import copy
  from coremltools import _logger
  from coremltools.converters.mil.mil import types
  from .basic_graph_ops import check_connections, const_determined_nodes
  from .dot_visitor import DotVisitor
  from .naming_utils import escape_fn_name
label_desc: Use image node_id 11 for calling the NetworkEnsemble obj's underlying member method code with example usage: obj.__copy__() and returns: ret