code: def in_context(self):
      return MLFLOW_RUN_CONTEXT.defined
  
imports: import json
  from mlflow.environment_variables import MLFLOW_RUN_CONTEXT
  from mlflow.tracking.context.abstract_context import RunContextProvider
label_desc: Use image node_id 1 for calling the SystemEnvironmentContext obj's underlying member method code with example usage: obj.in_context() and returns: MLFLOW_RUN_CONTEXT