Mockk anonymous class

Question

I'm trying to mock anonymous class created in testInstance Sample:

 class SomeClass(val someValue:SomeType) :SomeAnotherClass(){
        val anonymousClass = object : AnotherClass{
        override anotherMethod() { }
        }

        override fun someMethod(someValue) = anonymousClass.someMethod(someValue) 
  }

And test class:

   class SomeClassTest {
    private val someValue: SomeType = mockk()
    private val testInstance = spyk(SomeClass(someValue), recordPrivateCalls = true)
    
        @Test
        fun `test method`(){
            mockkConstructor(CustomTlsSocketFactory::class)
            every { anyConstructed<AnotherClass>().someMethod(someValue) } returns mockk()
    
            testInstance.someMethod(someValue)
    
            verify { anyConstructed<AnotherClass>().someMethod(someValue) }
          }
        }

And for some reason anonymousClass.someMethod(someValue) is trying to call original method not mockk. Calling testInstance.anonymousClass.isMock is false