kotlin-fork/analysis/low-level-api-fir/testData/getOrBuildFir/calls/compoundAssignWithArrayAccessConventionScript.kts

interface MyMap<K, V> {
    operator fun get(k: K): V
    operator fun set(k: K, v: V)
}

fun test(m: MyMap<String, Int>) {
    <expr>m["a"] += 1</expr>
}