public void setSelectedColumns(java.util.Collection<Option> selectedColumns) {
        if (selectedColumns == null) {
            this.selectedColumns = null;
            return;
        }

        this.selectedColumns = new java.util.ArrayList<Option>(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>

@param selectedColumns
       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