is ChainedSubstitutor -> KaFirChainedSubstitutor(substitutor, this@KaSymbolByFirBuilder)
                else -> KaFirGenericSubstitutor(substitutor, this@KaSymbolByFirBuilder)
            }
        }
    }

    /**
     * We shouldn't expose imported callables as they may have different [org.jetbrains.kotlin.name.CallableId]s