code: def gauge(self, name: str, obj: Callable[[], int]) -> None:
      from apache_beam.metrics.metric import Metrics
  
      self._flink_gauge[name] = obj
      self._beam_gauge[name] = Metrics.gauge(
          self._get_namespace(), name
      )
  
imports: import json
  from enum import Enum
  from typing import Callable, List, Tuple
  from pyflink.fn_execution.metrics.process.counter_impl import CounterImpl
  from pyflink.fn_execution.metrics.process.distribution_impl import DistributionImpl
  from pyflink.fn_execution.metrics.process.meter_impl import MeterImpl
  from pyflink.metrics import MetricGroup, Counter, Distribution, Meter
label_desc: Use image node_id 4 for calling the GenericMetricGroup obj's underlying member method code with example usage: obj.gauge(name, obj) without return types