code: def getContinuous(self, referenceName=None, start=None, end=None):
          
          bigWigReader = BigWigDataSource(self._filePath)
          for continuousObj in bigWigReader.bigWigToProtocol(
                                              referenceName, start, end):
              yield continuousObj
docs: Method passed to runSearchRequest to fulfill the request to
          yield continuous protocol objects that satisfy the given query.
  
          :param str referenceName: name of reference (ex: "chr1")
          :param start: castable to int, start position on reference
          :param end: castable to int, end position on reference
          :return: yields a protocol.Continuous at a time