parameters: (self, percentile=None)
return_statement: return self.rtt[percentile]
docstring: Returns the dictionary of all RTT value if `percentile` is none.
          Otherwise returns the `percentile`th percentile RTT.
docstring_summary: Returns the dictionary of all RTT value if `percentile` is none.
          Otherwise returns the `percentile`th percentile RTT.
docstring_tokens: Returns the dictionary of all RTT value if percentile is none . Otherwise returns the percentile th percentile RTT .
function: def rtt(self, percentile=None):
          """
          Returns the dictionary of all RTT value if `percentile` is none.
          Otherwise returns the `percentile`th percentile RTT.
          """
          if self.rtt is None or percentile is None:
              return self.rtt
          return self.rtt[percentile]
function_tokens: def rtt ( self , percentile = None ) : if self . rtt is None or percentile is None : return self . rtt return self . rtt [ percentile ]