init research

dataframe/plugins/kotlin-dataframe/testData/box/moveInto.kt

@@ -0,0 +1,13 @@
+import org.jetbrains.kotlinx.dataframe.*
+import org.jetbrains.kotlinx.dataframe.annotations.*
+import org.jetbrains.kotlinx.dataframe.api.*
+import org.jetbrains.kotlinx.dataframe.io.*
+
+fun box(): String {
+    val df = dataFrameOf("a", "b", "c")(1, 2, 3)
+        .group { a and b }.into("d")
+        .move { d.a }.into("renamedA")
+    df.renamedA
+    df.compareSchemas(strict = true)
+    return "OK"
+}