parameters: (self)
return_statement: return self._now
docstring: This sets the reactor now instant to the current time
docstring_summary: This sets the reactor now instant to the current time
docstring_tokens: This sets the reactor now instant to the current time
function: def mark(self) -> float:
          """ This sets the reactor now instant to the current time """
          self._now = _now()
          return self._now
function_tokens: def mark ( self ) -> float : self . _now = _now ( ) return self . _now