class_docstr: Custom time series parameter fitter. todo: write docstring.
  
  todo: describe your custom time series parameter fitter here
  
  Hyper-parameters
  ----------------
  parama : int
      descriptive explanation of parama
  paramb : string, optional (default='default')
      descriptive explanation of paramb
  paramc : boolean, optional (default= whether paramb is not the default)
      descriptive explanation of paramc
  and so on
  
  Components
  ----------
  est : sktime.estimator, BaseEstimator descendant
      descriptive explanation of est
  est2: another estimator
      descriptive explanation of est2
  and so on
docstr: Fit estimator and estimate parameters.
  
  private _fit containing the core logic, called from fit
  
  Writes to self:
      Sets fitted model attributes ending in "_".
  
  Parameters
  ----------
  X : guaranteed to be of a type in self.get_tag("X_inner_mtype")
      Time series to which to fit the estimator.
  
  Returns
  -------
  self : reference to self
docstr_tok: ["Fit","estimator","and","estimate","parameters",".","private","_fit","containing","the","core","logic",",","called","from","fit","Writes","to","self",":","Sets","fitted","model","attributes","ending","in","``","_","''",".","Parameters","--","--","--","--","--","X",":","guaranteed","to","be","of","a","type","in","self.get_tag","(","``","X_inner_mtype","''",")","Time","series","to","which","to","fit","the","estimator",".","Returns","--","--","--","-","self",":","reference","to","self"]
code: def _fit(self, X):
      """Fit estimator and estimate parameters.
  
      private _fit containing the core logic, called from fit
  
      Writes to self:
          Sets fitted model attributes ending in "_".
  
      Parameters
      ----------
      X : guaranteed to be of a type in self.get_tag("X_inner_mtype")
          Time series to which to fit the estimator.
  
      Returns
      -------
      self : reference to self
      """
  
file_path: sktime/extension_templates/param_est.py
imports: from sktime.param_est.base import BaseParamFitter
label_desc: Use image node_id 2 for calling the MyTimeSeriesParamFitter obj's underlying member method code with example usage: obj._fit(X) without return types