code: def compose_metric_namespace(
      namespace: MetricNamespaceBase,
      task_name: str,
  ) -> str:
      r"""Get the full namespace of a metric based on the input parameters"""
      return f"{namespace}-{task_name}"
  
imports: from enum import Enum
  from typing import Optional
label_desc: Use image node_id 2 for calling a global function with example usage: compose_metric_namespace(namespace, task_name) and returns: namespace, str, task_name