/**
  * Drop a column.
  *
  * @param           $table
  * @param FieldType $type
  */
 public function dropColumn($table, FieldType $type)
 {
     $schema = $type->getSchema();
     if (!$this->schema->hasTable($table)) {
         return;
     }
     $this->schema->table($table, function (Blueprint $table) use($schema) {
         $schema->dropColumn($table);
     });
 }