docs: def importPercolatorResults(siiContainer, filelocation, specfile, psmEngine,
                              qcAttr='qValue', qcLargerBetter=False,
                              qcCutoff=0.01, rankAttr='score',
                              rankLargerBetter=True):
      """Import peptide spectrum matches (PSMs) from a percolator result file,
      generate :class:`Sii <maspy.core.Sii>` elements and store them in the
      specified :class:`siiContainer <maspy.core.SiiContainer>`. Imported ``Sii``
      are ranked according to a specified attribute and validated if they surpass
      a specified quality threshold.
  
      :param siiContainer: imported PSM results are added to this instance of
          :class:`siiContainer <maspy.core.SiiContainer>`
      :param filelocation: file path of the percolator result file
      :param specfile: unambiguous identifier of a ms-run file. Is also used as
          a reference to other MasPy file containers.
      :param psmEngine: PSM search engine used for peptide spectrum matching
          before percolator. For details see :func:`readPercolatorResults()`.
          Possible values are 'comet', 'xtandem', 'msgf'.
      :param qcAttr: name of the parameter to define a quality cut off. Typically
          this is some sort of a global false positive estimator (eg FDR)
      :param qcLargerBetter: bool, True if a large value for the ``.qcAttr`` means
          a higher confidence.
      :param qcCutOff: float, the quality threshold for the specifed ``.qcAttr``
      :param rankAttr: name of the parameter used for ranking ``Sii`` according
          to how well they match to a fragment ion spectrum, in the case when
          their are multiple ``Sii`` present for the same spectrum.
      :param rankLargerBetter: bool, True if a large value for the ``.rankAttr``
          means a better match to the fragment ion spectrum
  
      For details on ``Sii`` ranking see :func:`applySiiRanking()`
  
      For details on ``Sii`` quality validation see :func:`applySiiQcValidation()`
      """
  
      path = os.path.dirname(filelocation)
      siiList = readPercolatorResults(filelocation, specfile, psmEngine)
      prepareSiiImport(siiContainer, specfile, path, qcAttr, qcLargerBetter,
                       qcCutoff, rankAttr, rankLargerBetter)
      addSiiToContainer(siiContainer, specfile, siiList)
      applySiiRanking(siiContainer, specfile)
      applySiiQcValidation(siiContainer, specfile)