system/Database/Schema/ColumnDefination.php
/**
     * Specify the referenced table and column
     *
     * @param string $table
     * @param string $column
     * @return \System\Database\Schema\ColumnDefination
     */
Specify the referenced table and column
@param string $table
@param string $column
@return \System\Database\Schema\ColumnDefination
Specify the referenced table and column @param string $table @param string $column @return \ System \ Database \ Schema \ ColumnDefination
public function references(string $table, $column = null)
    {
        self::$migration .= "REFERENCES $table(";
        if($column !== null)
        {
            self::$migration .= "`$column`), ";  
        }
        return $this;
    }
public function references ( string $ table , $ column = null ) { self :: $ migration .= " REFERENCES  $ table ( " ; if ( $ column !== null ) { self :: $ migration .= " ` $ column `),  " ; } return $ this ; }
Specify the referenced table and column
 @param string $table
 @param string $column
 @return \System\Database\Schema\ColumnDefination
Specify the referenced table and column @param string $table @param string $column @return \ System \ Database \ Schema \ ColumnDefination