'Sample a histogram value, with optional tags, hostname and device name.
:param metric: The name of the metric
:param value: The value to sample for the histogram
:param tags: (optional) A list of tags for this metric
:param hostname: (optional) A hostname for this metric. Defaults to the current hostname.
:param device_name: (optional) The device name for this metric'

def histogram(self, metric, value, tags=None, hostname=None, device_name=None):

    self.aggregator.histogram(metric, value, tags, hostname, device_name)
