_migration_helper.php

<?php

namespace Illuminate\Support {
    /**
     * Date: 2018/9/8
     * @author George
     * @method Fluent first()
     * @method Fluent after($column)
     * @method Fluent change()
     * @method Fluent nullable()
     * @method Fluent unsigned()
     * @method Fluent unique()
     * @method Fluent index()
     * @method Fluent comment($comment)
     * @method Fluent primary()
     * @method Fluent default($value)
     * @method Fluent onUpdate($value)
     * @method Fluent onDelete($value)
     * @method Fluent references($value)
     * @method Fluent on($value)
     * @method Fluent useCurrent()
     * @package Illuminate\Support
     */
    class Fluent {

    }
}

namespace Illuminate\Database\Schema {
    /**
     * Date: 2018/9/8
     * @author George
     * @method ColumnDefinition first()
     * @method ColumnDefinition after($column)
     * @method ColumnDefinition change()
     * @method ColumnDefinition nullable()
     * @method ColumnDefinition unsigned()
     * @method ColumnDefinition unique()
     * @method ColumnDefinition index()
     * @method ColumnDefinition comment($comment)
     * @method ColumnDefinition primary()
     * @method ColumnDefinition default($value)
     * @method ColumnDefinition onUpdate($value)
     * @method ColumnDefinition onDelete($value)
     * @method ColumnDefinition references($value)
     * @method ColumnDefinition on($value)
     * @method ColumnDefinition useCurrent()
     * @package Illuminate\Database\Schema
     */
    class ColumnDefinition {

    }
}