code: def _cube(x, fun_args):
      return x**3, (3 * x**2).mean(axis=-1)
  
imports: import warnings
  import numpy
  from scipy import linalg
  from ..base import BaseEstimator, TransformerMixin
  from ..externals import six
  from ..externals.six import moves
  from ..utils import check_array, as_float_array, check_random_state
  from ..utils.extmath import fast_dot
  from ..utils.validation import check_is_fitted
  from ..utils.validation import FLOAT_DTYPES
label_desc: Use image node_id 7 for calling a global function with example usage: _cube(x, fun_args) and returns: unknown,  unknown