code: def readStringAtRva(self, rva):
          
          d = self.getDataAtRva(rva,  1)
          resultStr = datatypes.String("")
          while d != "\x00":
              resultStr.value += d
              rva += 1
              d = self.getDataAtRva(rva, 1)
          return resultStr
docs: Returns a L{String} object from a given RVA. 
          
          @type rva: int
          @param rva: The RVA to get the string from.
          
          @rtype: L{String}
          @return: A new L{String} object from the given RVA.