public java.util.List<Option> getSelectedColumns() {
        return selectedColumns;
    }
<p>
Specifies the columns combined to identify a record when detecting matches for merges and upserts. A list of
structures with <code>value</code>, <code>label</code> and <code> description</code> keys. Each structure
describes a column.
</p>

@return Specifies the columns combined to identify a record when detecting matches for merges and upserts. A list
        of structures with <code>value</code>, <code>label</code> and <code> description</code> keys. Each
        structure describes a column.
aws-java-sdk-glue/src/main/java/com/amazonaws/services/glue/model/SnowflakeNodeData.java