code: def __call__(self, *args, **kw):
      return self.fn(*args, **kw) + self.offset
  
imports: import numpy
  from statsmodels.genmod import families
  from statsmodels.sandbox.nonparametric.smoothers import PolySmoother
  from statsmodels.genmod.generalized_linear_model import GLM
  from statsmodels.tools.sm_exceptions import IterationLimitWarning, iteration_limit_doc
  import warnings
label_desc: Use image node_id 2 for calling the Offset obj's underlying member method code with example usage: obj.__call__() and returns: unknown