docstr: Get a value by key
  
  Arguments:
      key (str): Key of the value
docstr_tok: ["Get","a","value","by","key","Arguments",":","key","(","str",")",":","Key","of","the","value"]
code: def get_value(self, key: str):
      """
      Get a value by key
  
      Arguments:
          key (str): Key of the value
      """
      return self._values[key]
  
imports: from typing import Callable, Dict, List, TYPE_CHECKING
  from labml.internal.util.strings import is_pattern_match
label_desc: Use image node_id 3 for calling the ValueCollection obj's underlying member method code with example usage: obj.get_value(key) and returns: self