code: function _signersFromAsn1(signerInfoAsn1s) {
    var ret = [];
    for(var i = 0; i < signerInfoAsn1s.length; ++i) {
      ret.push(_signerFromAsn1(signerInfoAsn1s[i]));
    }
    return ret;
  }
docs: Map a set of SignerInfo ASN.1 objects to an array of signer objects.
  
  @param signerInfoAsn1s an array of ASN.1 SignerInfos (i.e. SET OF).
  
  @return an array of signers objects.