diff --git a/synapse/metrics/__init__.py b/synapse/metrics/__init__.py
index e0cfb7d08f..50d99d7a5c 100644
--- a/synapse/metrics/__init__.py
+++ b/synapse/metrics/__init__.py
@@ -57,15 +57,31 @@ class Metrics(object):
return metric
def register_counter(self, *args, **kwargs):
+ """
+ Returns:
+ CounterMetric
+ """
return self._register(CounterMetric, *args, **kwargs)
def register_callback(self, *args, **kwargs):
+ """
+ Returns:
+ CallbackMetric
+ """
return self._register(CallbackMetric, *args, **kwargs)
def register_distribution(self, *args, **kwargs):
+ """
+ Returns:
+ DistributionMetric
+ """
return self._register(DistributionMetric, *args, **kwargs)
def register_cache(self, *args, **kwargs):
+ """
+ Returns:
+ CacheMetric
+ """
return self._register(CacheMetric, *args, **kwargs)
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