code: def merge(self, other, forceMerge=False):
      
      if self.sequenceName != other.sequenceName and not forceMerge:
        raise NGSReadError("cannot merge " + self.sequenceName + " with " +
                           other.sequenceName + " -- different " +
                           "sequence names")
  
      name = self.sequenceName
      seq = self.sequenceData + other.sequenceData
      qual = self.sequenceQual + other.sequenceQual
  
      return NGSReadError(name, seq, qual)
docs: Merge two reads by concatenating their sequence data and their
        quality data (<self> first, then <other>); <self> and <other> must have
        the same sequence name. A new merged FastqSequence object is returned;
        <Self> and <other> are left unaltered.
  
        :param other: the other sequence to merge with self.
        :param forceMerge: force the merge to occur, even if sequences names
                           don't match. In this case, <self> takes precedence.
        :return: A new FastqSequence that represents the merging of <self> and
                 <other>
        :raise: FastqSequenceError if the sequences names do not match, and the
                forceMerge parameter is not set.