class_docstr: Register module load the registry according to the metrics in config.
  It is a member of DataCollector.
  The DataCollector collect the resource that need for Evaluator under the guidance of Register
code: def need(self, key: str):
      if hasattr(self, key):
          return getattr(self, key)
      return False
  
file_path: RecBole/recbole/evaluator/register.py
imports: import inspect
  import sys
label_desc: Use image node_id 4 for calling the Register obj's underlying member method code with example usage: obj.need(key) and returns: False, getattr