Provide unsafe version of single function get

JacksonGet.kt

import com.fasterxml.jackson.databind.JsonNode
import com.fasterxml.jackson.databind.ObjectMapper

val defaultMapper = ObjectMapper()
val defaultMapperContext = MapperContext(defaultMapper)

class MapperContext(val mapper: ObjectMapper) {
    inline operator fun <reified T> JsonNode.get(vararg params: Any): T {
        var current = this
        for (param in params) {
            current = when (param) {
                is Int -> current[param]
                is String -> current[param]
                else -> throw IllegalArgumentException("Only String or Int allowed")
            }
        }
        return mapper.treeToValue(current, T::class.java)
    }

    inline operator fun <reified T> String.get(vararg params: Any): T {
        return mapper.readTree(this).get(*params)
    }
}

fun <T> ObjectMapper.use(action: MapperContext.() -> T): T = MapperContext(this).action()

inline operator fun <reified T> JsonNode.get(vararg params: Any): T = with(defaultMapperContext) { this@get.get(*params) }
inline operator fun <reified T> String.get(vararg params: Any): T = with(defaultMapperContext) { this@get.get(*params) }

fun main() {
    val json = """
    {
        "somebody": {
            "told": [
                {
                "me" :5
                },
                2,
                "ping"
            ]
        }
    }
    """
    val value: Int = json["somebody", "told", 0, "me"]
    println(value)

    val altValue: Int = defaultMapper.use { json["somebody", "told", 0, "me"] }
    println(altValue)
}