code: def get(self, key):
      return self.value
  
imports: import pytest
  from jinja2 import Environment
  from jinja2.bccache import Bucket
  from jinja2.bccache import FileSystemBytecodeCache
  from jinja2.bccache import MemcachedBytecodeCache
  from jinja2.exceptions import TemplateNotFound
label_desc: Use image node_id 1 for calling the MockMemcached obj's underlying member method code with example usage: obj.get(key) and returns: self