code: function readDicomDataSetExplicitUndefinedLength (byteStream, warnings) {
    const elements = {};
  
    while (byteStream.position < byteStream.byteArray.length) {
      const element = readDicomElementExplicit(byteStream, warnings);
  
      elements[element.tag] = element;
  
      // we hit an item delimiter tag, return the current offset to mark
      // the end of this sequence item
      if (element.tag === 'xfffee00d') {
        return new DataSet(byteStream.byteArrayParser, byteStream.byteArray, elements);
      }
    }
  
    // eof encountered - log a warning and return what we have for the element
    warnings.push('eof encountered before finding item delimiter tag while reading sequence item of undefined length');
  
    return new DataSet(byteStream.byteArrayParser, byteStream.byteArray, elements);
  }
docs: Internal helper functions for parsing DICOM elements