code: function addBoundsToArray(bounds, array) {
      if( !bounds ) return;
      var bound;
  
      for( var j = 0; j < bounds.length; j++ ) {
        bound = bounds[j];
        if( bound.type === 'UBM' || bound.type === 'LBM' ) {
          array.push(bound);
        }
      }
  }
docs: helper for readUBMandLBM