docstr: The fitted signal.
          
docstr_tok: ["The","fitted","signal","."]
code: def fitted_signal(self):
      """The fitted signal."""
      phi = self.model.cache_get("shore_matrix", key=self.model.gtab)
      return np.dot(phi, self._shore_coef)
  
imports: from warnings import warn
  from math import factorial
  import numpy
  from scipy.special import genlaguerre, gamma, hyp2f1
  from dipy.reconst.cache import Cache
  from dipy.reconst.multi_voxel import multi_voxel_fit
  from dipy.reconst.shm import real_sh_descoteaux_from_index
  from dipy.core.geometry import cart2sphere
  from dipy.utils.optpkg import optional_package
label_desc: Use image node_id 9 for calling the ShoreFit obj's underlying member method code with example usage: obj.fitted_signal() and returns: np