class_docstr: Exponential Distribution
  ----
  This class contains methods relating to the Exponential distribution for time series.
code: def exponential_link(x):
      return 1.0 / np.exp(x)
  
imports: import numpy
  import scipy.stats
  import scipy.special
  from .family import Family
  from .flat import Flat
  from .normal import Normal
  from .gas_recursions import gas_recursion_exponential_orderone, gas_recursion_exponential_ordertwo
  from .gas_recursions import gasx_recursion_exponential_orderone, gasx_recursion_exponential_ordertwo
  from .gas_recursions import gas_llev_recursion_exponential_orderone, gas_llev_recursion_exponential_ordertwo
  from .gas_recursions import gas_llt_recursion_exponential_orderone, gas_llt_recursion_exponential_ordertwo
  from .gas_recursions import gas_reg_recursion_exponential_orderone, gas_reg_recursion_exponential_ordertwo
label_desc: Use image node_id 9 for calling the Exponential obj's underlying member method code with example usage: obj.exponential_link(x) and returns: unknown