) : JavaElementPsiSource<PSI>() {

    // is used only for the purposes of equals/hashCode to avoid underlying PCE
    private val originalPsi: PSI = psi

    override val psi: PSI
        get() {
            return pointer.element
                ?: error("Cannot restore a PsiElement from $pointer")
        }

    override fun equals(other: Any?): Boolean {

    override fun hashCode(): Int = Objects.hashCode(backingArgument, backingType, backingIsNegated)
    override fun equals(other: Any?): Boolean {
        return this === other ||
                other is KaContractIsInstancePredicateExpression &&
                other.backingArgument == backingArgument &&

  S from /Y.foo1
  t: Int from /Y.foo1

fun <Q> foo2(t: Int) fromClass Y
  Q from /Y.foo2
  t: Int from /Y.foo2

fun <U> foo3() fromClass X
  U from /X.foo3

fun equals(other: Any?): Boolean fromClass kotlin/Any
  other: Any? from kotlin/Any.equals

fun hashCode(): Int fromClass kotlin/Any

fun toString(): String fromClass kotlin/Any

    override fun hashCode(): Int = Objects.hashCode(backingValueParameterReference, backingOccurrencesRange)
    override fun equals(other: Any?): Boolean {
        return this === other ||
                other is KaContractCallsInPlaceContractEffectDeclaration &&
                other.backingValueParameterReference == backingValueParameterReference &&

fun <T> foo() fromClass Y
  T from /Y.foo

fun equals(other: Any?): Boolean fromClass kotlin/Any
  other: Any? from kotlin/Any.equals

fun hashCode(): Int fromClass kotlin/Any

fun toString(): String fromClass kotlin/Any

        KaFe10VariableLikeSignature(
            symbol,
            substitutor.substitute(returnType),
            receiverType?.let { substitutor.substitute(it) },
        )
    }

    override fun equals(other: Any?): Boolean {
        if (this === other) return true
        if (javaClass != other?.javaClass) return false

        other as KaFe10VariableLikeSignature<*>

            } else {
                KaSymbolOrigin.LIBRARY
            }
        }

    override fun hashCode(): Int {
        return packageName.hashCode()
    }

    override fun equals(other: Any?): Boolean {
        return packageName == (other as? KaFe10PackageSymbol)?.fqName
    }

    override val abbreviatedType: KaUsualClassType?
        get() = withValidityAssertion { null }

    override fun equals(other: Any?) = typeEquals(other)
    override fun hashCode() = typeHashcode()
    override fun toString(): String = coneType.renderForDebugging()

        KaPsiBasedSymbolPointer.createForSymbolFromSource<KaReceiverParameterSymbol>(this) ?: KaFe10NeverRestoringSymbolPointer()
    }

    override fun equals(other: Any?): Boolean = isEqualTo(other)
    override fun hashCode(): Int = calculateHashCode()

     *
     * @see KaSubstitutor.substitute
     */
    public abstract fun substitute(substitutor: KaSubstitutor): KaCallableSignature<S>

    abstract override fun equals(other: Any?): Boolean
    abstract override fun hashCode(): Int
}