UndefinedMethod for shouldReceive method

[matiux]

When I call shouldReceive method on a mocked class I get the UndefinedMethod error.

I have already seen this issue but it is not clear to me how to solve

[matiux]

Update:

If I mock class and call shouldReceive in same test method, it works

function testMyClass 
{
   $myClass = Mockery::mock(MyClass::class);
   $myClass->shouldReceive('doSomething');
}

otherwise, if I declare the mock as instance variable in setUp method, and call shouldReceive in test method, psalm doesn't work getting UndefinedMethod

private $myClass;

function setUp()
{
   $this->myClass = Mockery::mock(MyClass::class);
}

function testMyClass 
{
   
   $this->myClass->shouldReceive('doSomething');
}