public void setColumnMetadata(java.util.Collection<ColumnMetadata> columnMetadata) {
        if (columnMetadata == null) {
            this.columnMetadata = null;
            return;
        }

        this.columnMetadata = new java.util.ArrayList<ColumnMetadata>(columnMetadata);
    }
<p>
Metadata for the columns included in the results. This field is blank if the <code>formatRecordsAs</code>
parameter is set to <code>JSON</code>.
</p>

@param columnMetadata
       Metadata for the columns included in the results. This field is blank if the <code>formatRecordsAs</code>
       parameter is set to <code>JSON</code>.
aws-java-sdk-rdsdata/src/main/java/com/amazonaws/services/rdsdata/model/ExecuteStatementResult.java