code: function() {
  
      var params = Object.assign({},this)
  
      if( params.value === 'text' ) {
        params.value = void 0
        delete params.value
      }
  
      var data = [ this._field, params, this.value || 'text' ]
  
      switch( this._field ) {
        default: data.push( this._data ); break
        case 'adr':
        case 'n':
          data.push( this._data.split( ';' ) )
      }
  
      return data
  
    }
docs: Format the property as jCard data
  @return {Array}