docstr: Connect to a VegaFusion server over gRPC using the provided gRPC channel
  
  :param channel: grpc.Channel instance configured with the address of a running VegaFusion server
code: def grpc_connect(self, channel):
      """
      Connect to a VegaFusion server over gRPC using the provided gRPC channel
  
      :param channel: grpc.Channel instance configured with the address of a running VegaFusion server
      """
      # TODO: check channel type
      self._grpc_channel = channel
  
imports: import pandas
  import psutil
  import pyarrow
  from typing import Union
  from .connection import SqlConnection
  from .dataset import SqlDataset, DataFrameDataset
  from .datasource import PandasDatasource, DfiDatasource
  from .evaluation import get_mark_group_for_scope
  from .transformer import import_pyarrow_interchange, to_arrow_table
  from .local_tz import get_local_tz
  from typing import TypedDict, List, Literal, Any
label_desc: Use image node_id 4 for calling the VegaFusionRuntime obj's underlying member method code with example usage: obj.grpc_connect(channel) without return types