class ElasticAPM::Metrics::Counter

@api private

def dec! 

def dec!
  @mutex.synchronize do
    @value -= 1
  end
end

def inc! 

def inc!
  @mutex.synchronize do
    @value += 1
  end
end

def initialize(key, initial_value: 0, **args) 

def initialize(key, initial_value: 0, **args)
  super(key, initial_value: initial_value, **args)
end