* otherwise null
 *
 * @see KaSymbol.psiSafe
 */
public inline fun <reified PSI : PsiElement> KaSymbol.sourcePsiSafe(): PSI? {
    if (origin != KaSymbolOrigin.SOURCE && origin != KaSymbolOrigin.JAVA_SOURCE) return null

    return psi as? PSI
}

/**
 * A place where [KaSymbol] came from
 */