class_docstr: Fit height of signal peak over background.
code: def loglike(self, params):  # pylint: disable=E0202
      return -self.nloglike(params)
  
imports: import numpy
  from scipy import stats
  from statsmodels.base.model import GenericLikelihoodModel
  from numpy.testing import assert_array_less, assert_almost_equal, assert_allclose
label_desc: Use image node_id 2 for calling the TwoPeakLLHNoExog obj's underlying member method code with example usage: obj.loglike(params) and returns: unknown