code: function evalDefaults ( formMeta ) {
      var fields = g.getOrDefault( formMeta, 'fields', {} );
      
      return g.reduce(function ( acc, fldMeta, fldID ) {
          acc[ fldID ] = g.getOrNull( fldMeta, 'defaultValue' );
          return acc;
      }, {}, fields );
  }
docs: Calculates form's (default) value by it's meta.
  @param {Object} formMeta - metadata in FormGenerator format.
  @return {Object} - {
  %fieldID%: %fieldValue%,
  ...
  }