code: def gcp_cache(future_expiration_minutes=15):
      
  
      def decorator(f):
          @wraps(f)
          def decorated_function(*args, **kwargs):
              strkey = _build_key(f.__name__, args, kwargs)
              cached_result = _GCP_CACHE.get(strkey)
              if cached_result:
                  return cached_result
              else:
                  result = f(*args, **kwargs)
                  _GCP_CACHE.insert(strkey, result, future_expiration_minutes)
              return result
  
          return decorated_function
  
      return decorator
docs: Cache function output
      :param future_expiration_minutes: Number of minutes in the future until item
                                        expires.  Default is 15.
      :returns: function response, optionally from the cache
      :rtype: varies