values of the numerics.
    numerics.forEach(function(numeric) {
      if (numeric === undefined) return;

      const unit = numeric.unit;
      if (aggregatedUnit === undefined) {
        aggregatedUnit = unit;
      } else if (aggregatedUnit !== unit) {
        if (shouldLogWarning) {
          opt_model.importWarning({
            type: 'numeric_parse_error',
            message: 'Multiple units provided for numeric: \'' +
                aggregatedUnit.unitName + '\' and \'' + unit.unitName + '\'.'
   