docstr: Inverse operation of softplus.
  
  y = Log(Exp(x) - 1)
    = Log(1 - Exp(-x)) + x
docstr_tok: ["Inverse","operation","of","softplus",".","y","=","Log","(","Exp","(","x",")","-","1",")","=","Log","(","1","-","Exp","(","-x",")",")","+","x"]
code: def forward(self, value, *inputs):
      """Inverse operation of softplus.
  
      y = Log(Exp(x) - 1)
        = Log(1 - Exp(-x)) + x
      """
      return pt.log(1.0 - pt.exp(-value)) + value
  
imports: import warnings
  from functools import singledispatch
  import numpy
  import pytensor.tensor
  from numpy.core.numeric import normalize_axis_tuple
  from pytensor.graph import Op
  from pytensor.tensor import TensorVariable
  import pymc
  from pymc.logprob.transforms import ChainedTransform, CircularTransform, IntervalTransform, LogOddsTransform, LogTransform, SimplexTransform, Transform
label_desc: Use image node_id 2 for calling the LogExpM1 obj's underlying member method code with example usage: obj.forward(value) and returns: unknown