<?php

use PHPUnit\Framework\IncompleteTest;
use \Countable;

/**
 * Interface interface_sample
 */
interface interface_sample extends IncompleteTest {


    public const test = 'test';
    const A = 'a';
    const B = 'b';

    //public method
    function method_0();

    public function method_1();

    //static methods
    public static function method_2();

    static function method_3();

    // methods with returns type
    public function method_4(): test;

    public function method_5(): string;

    public function method_6(): bool;

    public function method_7(): int;

    public function method_8(): array;

    public function method_9(): void;

    public function method_10(): float;

    public function method_11(): ?string;

    // with parameters
    public function method_12($parameter1);

    public function method_13(?int $parameter1);

    public function method_14(int $parameter1);

    public function method_15(int $parameter1, $parameter2, string $parameter3);

    public function method_16(...$parameter2);

    public function method_17(string ...$parameter1);

    public function method_18(?string ...$parameter1);

    public function method_19($parameter1 = null);

}