docs: def draw(self):
          """
          Draws the alpha plot based on the values on the estimator.
          """
          # Search for the correct parameters on the estimator.
          alphas = self._find_alphas_param()
          errors = self._find_errors_param()
  
  
          alpha = self.estimator.alpha_ # Get decision from the estimator
          name = self.name[:-2].lower() # Remove the CV from the label
  
          # Plot the alpha against the error
          self.ax.plot(alphas, errors, label=name)
  
          # Draw a dashed vline at the alpha
          label = "$\\alpha={:0.3f}$".format(alpha)
          self.ax.axvline(alpha, color='k', linestyle='dashed', label=label)
  
          return self.ax