/**
 * Finds [PsiElement] which will be used as go-to referenced element for [KtPsiReference]
 * For data classes & enums generated members like `copy` `componentN`, `values` it will return corresponding enum/data class
 * Otherwise, behaves the same way as [findPsi] returns exact PSI declaration corresponding to passed [FirDeclaration]
 */
fun FirDeclaration.findReferencePsi(): PsiElement? {
    return if (this is FirCallableDeclaration) {