docstr: Decrement the current count by 1.
  
  .. versionadded:: 1.11.0
docstr_tok: ["Decrement","the","current","count","by","1",".","..","versionadded",":",":","1.11.0"]
code: def dec(self, n: int = 1):
      """
      Decrement the current count by 1.
  
      .. versionadded:: 1.11.0
      """
      self.inc(-n)
  
imports: from pyflink.metrics import Counter
label_desc: Use image node_id 3 for calling the CounterImpl obj's underlying member method code with example usage: obj.dec(n) without return types