lib/qx/tool/compiler/util.js
function AbstractError(msg, code, constr) {
  Error.captureStackTrace(this, constr || this);
  this.message = msg || "Error";
  this.code = code || "EUNKNOWN";
}
function AbstractError(msg, code, constr) {
  Error.captureStackTrace(this, constr || this);
  this.message = msg || "Error";
  this.code = code || "EUNKNOWN";
}
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EXCEPTIONS