parameters: (self, crash)
return_statement: return self._dao.count(signature=crash.signature) > 0
docstring: @type  crash: L{Crash}
          @param crash: Crash object.
  
          @rtype:  bool
          @return: C{True} if the Crash object is in the container.
docstring_summary: @type  crash: L{Crash}
          @param crash: Crash object.
docstring_tokens: @type crash : L { Crash } @param crash : Crash object .
function: def __contains__(self, crash):
          """
          @type  crash: L{Crash}
          @param crash: Crash object.
  
          @rtype:  bool
          @return: C{True} if the Crash object is in the container.
          """
          return self._dao.count(signature=crash.signature) > 0
function_tokens: def __contains__ ( self , crash ) : return self . _dao . count ( signature = crash . signature ) > 0