class_docstr: Serve parameters for a single process.
class_docstr_tok: ["Serve","parameters","for","a","single","process","."]
docstr: Get the names of registered parameter (including unset).
docstr_tok: ["Get","the","names","of","registered","parameter","(","including","unset",")","."]
code: def param_keys(self) -> Tuple[KeyT, ...]:
      """Get the names of registered parameter (including unset)."""
      return tuple(self._params.keys())
  
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 2 for calling the ParamServer obj's underlying member method code with example usage: obj.param_keys() and returns: tuple