Why

InlineStubPropertyToCreateStubMethodCallRector inlined $this->createStub(...) at every property fetch. When a stub property is used 2+ times in a single method, that produced multiple distinct stub instances — breaking identity checks like spl_object_id($this->formatter).

What

Per-method handling in refactorClassMethod():

• 1 use in a method → inline directly (unchanged).
• 2+ uses in a method → declare a local variable assigned to $this->createStub(...) above the first use, then reuse the variable.

Variable name via resolveVariableName(): formatter → $formatterStub; a name already ending in Stub is kept as-is (someStub → $someStub).

Before

public function testAnother()
{
    $handler = new FileLogHandler($this->createStub(FormatterInterface::class));
    $this->assertSame(spl_object_id($this->createStub(FormatterInterface::class)), spl_object_id($handler->getFormatter()));
}

After

public function testAnother()
{
    $formatterStub = $this->createStub(FormatterInterface::class);
    $handler = new FileLogHandler($formatterStub);
    $this->assertSame(spl_object_id($formatterStub), spl_object_id($handler->getFormatter()));
}

Only Stub properties are touched; MockObject (createMock) is left untouched.

Tests

• Updated inline_used_in_calls.php.inc (2 uses → reuses local var).
• Added reuse_variable_on_multiple_uses.php.inc.

ECS, PHPStan, Rector, and the rule tests all pass.