class_docstr: Module mix-in for the parametric function classes.
      
docstr: Save all parameters into a file with the specified format.
  
  Currently hdf5 and protobuf formats are supported.
  
  Args:
      path : path or file object
      grad_only (bool, optional): Return parameters with `need_grad` option as `True`. 
code: def save_parameters(self, path, grad_only=False):
      """Save all parameters into a file with the specified format.
  
      Currently hdf5 and protobuf formats are supported.
  
      Args:
          path : path or file object
          grad_only (bool, optional): Return parameters with `need_grad` option as `True`.
      """
      params = self.get_parameters(grad_only=grad_only)
      nn.save_parameters(path, params)
  
file_path: nnabla/python/src/nnabla/experimental/parametric_function_class/module.py
imports: from collections import OrderedDict
  import nnabla
label_desc: Use image node_id 4 for calling the Module obj's underlying member method code with example usage: obj.save_parameters(path, grad_only) without return types