get

Returns a list of columns selected by columns, a ColumnsSelectionDsl.

operator fun <T> DataFrame<T>.get(first: String, vararg other: String): DataFrame<T>

operator fun <T> DataFrame<T>.~~get~~(first: ColumnReference<*>, vararg other: ColumnReference<*>): DataFrame<T>

It's recommended to migrate to the String or Extension Properties Access API https://kotlin.github.io/dataframe/apilevels.html