class_docstr: Represents a DataRequest used for exchanging :class:`docarray.DocumentArray` with and within a Flow.
  
  When calling :meth:`~jina.clients.mixin.PostMixin.post` on any Jina client,
  the provided input :class:`docarray.DocumentArray` will be
  converted to a :class:`DataRequest` before being sent to a Flow.
docstr: Set the `parameters` field of this Request to a Python dict
  
  :param value: a Python dict
docstr_tok: ["Set","the","`","parameters","`","field","of","this","Request","to","a","Python","dict",":","param","value",":","a","Python","dict"]
code: def parameters(self, value: Dict):
      """Set the `parameters` field of this Request to a Python dict
  
      :param value: a Python dict
      """
      self.proto_wo_data.parameters.Clear()
      parameters = value
      if docarray_v2:
          from pydantic import BaseModel
  
          if isinstance(value, BaseModel):
              parameters = dict(value)
      self.proto_wo_data.parameters.update(parameters)
  
imports: import copy
  from typing import Dict, Optional, Type, TypeVar, Union
  from google.protobuf import json_format
  from jina._docarray import DocumentArray, Document, docarray_v2
  from jina.excepts import BadRequestType
  from jina.helper import random_identity, typename
  from jina.proto import jina_pb2
  from jina.types.request import Request
label_desc: Use image node_id 16 for calling the DataRequest obj's underlying member method code with example usage: obj.parameters(value) without return types