class_docstr: Serve parameters for a single process.
class_docstr_tok: ["Serve","parameters","for","a","single","process","."]
code: def get_grad(self, model_id: int, name: str) -> FloatsXd:
      key = (model_id, name)
      return self._grads[key]
  
file_path: thinc/thinc/backends/_param_server.py
imports: from typing import Any, Dict, Optional, Tuple
  from ..types import FloatsXd
  from ..util import get_array_module
label_desc: Use image node_id 7 for calling the ParamServer obj's underlying member method code with example usage: obj.get_grad(model_id, name) and returns: self