public ResultSetMetadata withColumnMetadata(ColumnMetadata... columnMetadata) {
        if (this.columnMetadata == null) {
            setColumnMetadata(new java.util.ArrayList<ColumnMetadata>(columnMetadata.length));
        }
        for (ColumnMetadata ele : columnMetadata) {
            this.columnMetadata.add(ele);
        }
        return this;
    }
<p>
The metadata of the columns in the result set.
</p>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setColumnMetadata(java.util.Collection)} or {@link #withColumnMetadata(java.util.Collection)} if you want
to override the existing values.
</p>

@param columnMetadata
       The metadata of the columns in the result set.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-rdsdata/src/main/java/com/amazonaws/services/rdsdata/model/ResultSetMetadata.java