code: def f(self, x):
      return np.dot(np.insert(x, 0, 1.0), self.params)
  
file_path: GPyOpt/GPyOpt/testing/functional_tests/mocks.py
imports: import numpy
  from GPyOpt.models.base import BOModel
label_desc: Use image node_id 2 for calling the MockModel obj's underlying member method code with example usage: obj.f(x) and returns: np