IntelliJのphp pluginの挙動

method_chaning.php

<?php

class A
{
    /**
     * @return $this
     */
    public function foo()
    {
        return $this;
    }
}

class B extends A
{
    /**
     * @return $this
     */
    public static function bar()
    {
        return (new static())
            ->foo()
            ->foo() // 'Method '[name]' not found in class' when create instance by static().
            ->foo(); // this line is no suggest.
    }

    /**
     * @return $this
     */
    public static function foobar()
    {
        return (new self())
            ->foo()
            ->foo() // create instance by self()
            ->foo();
    }
}

(new A)
    ->foo()
    ->foo()
    ->foo();
(new B)
    ->foo()
    ->foo()
    ->foo();
(new B)
    ->bar()
    ->foo() // no inspection when to write '@return $this' at phpdoc for B::bar() method.
    ->foo();
(new B)
    ->foobar()
    ->foo()
    ->foo();

screen_shot.png

関連ありそうなISSUE

https://youtrack.jetbrains.com/issue/WI-7619
https://youtrack.jetbrains.com/issue/WI-15582
https://youtrack.jetbrains.com/issue/WI-15903

https://youtrack.jetbrains.com/issue/WI-28800