public void setColumns(java.util.Collection<ColumnInfo> columns) {
        if (columns == null) {
            this.columns = null;
            return;
        }

        this.columns = new java.util.ArrayList<ColumnInfo>(columns);
    }
<p>
Represents a single column in the query results.
</p>

@param columns
       Represents a single column in the query results.
aws-java-sdk-iotsitewise/src/main/java/com/amazonaws/services/iotsitewise/model/ExecuteQueryResult.java