code: def set_keyed_state_backend(
      self, keyed_state_backend: KeyedStateBackend
  ):
      self._keyed_state_backend = keyed_state_backend
  
imports: from pyflink.datastream import RuntimeContext
  from pyflink.datastream.state import AggregatingStateDescriptor, AggregatingState, ReducingStateDescriptor, ReducingState, MapStateDescriptor, MapState, ListStateDescriptor, ListState, ValueStateDescriptor, ValueState
  from pyflink.fn_execution.embedded.state_impl import KeyedStateBackend
  from pyflink.fn_execution.metrics.embedded.metric_impl import MetricGroupImpl
  from pyflink.metrics import MetricGroup
label_desc: Use image node_id 15 for calling the StreamingRuntimeContext obj's underlying member method code with example usage: obj.set_keyed_state_backend(keyed_state_backend) without return types