docstr: To be implemented but specific odf models
docstr_tok: ["To","be","implemented","but","specific","odf","models"]
code: def odf(self, sphere):
      """To be implemented but specific odf models"""
      raise NotImplementedError("To be implemented in sub classes")
  
file_path: dipy/dipy/reconst/odf.py
imports: from dipy.reconst.base import ReconstModel, ReconstFit
  import numpy
label_desc: Use image node_id 1 for calling the OdfFit obj's underlying member method code with example usage: obj.odf(sphere) without return types