class_docstr: Base class for factors representing various multivariate
  representations.
docstr: Returns the pdf of the ContinuousFactor.
docstr_tok: ["Returns","the","pdf","of","the","ContinuousFactor","."]
code: def pdf(self):
      """
      Returns the pdf of the ContinuousFactor.
      """
      return self.distribution.pdf
  
imports: import types
  import numpy
  import scipy.integrate
  from pgmpy.factors.base import BaseFactor
  from pgmpy.factors.distributions import GaussianDistribution, CustomDistribution
label_desc: Use image node_id 2 for calling the ContinuousFactor obj's underlying member method code with example usage: obj.pdf() and returns: self