class_docstr: A simple keyring which just stores provided info in memory
  
  Primarily for testing
code: def __init__(self):
      self.entries = {}
  
file_path: datalad/datalad/support/keyring_.py
imports: import os
  import logging
label_desc: Use image node_id 1 to create a new MemoryKeyring object from inherited base classes: object with example: obj = MemoryKeyring()