code: def getTmpFilename(self, tmp_dir="/tmp",prefix='tmp',suffix='.fasta',\
             include_class_id=False,result_constructor=FilePath):
          
  
          return super(Pplacer,self).getTmpFilename(tmp_dir=tmp_dir,
                                      prefix=prefix,
                                      suffix=suffix,
                                      include_class_id=include_class_id,
                                      result_constructor=result_constructor)
docs: Define Tmp filename to contain .fasta suffix, since pplacer requires
              the suffix to be .fasta