public CreateConfiguredTableRequest withAllowedColumns(String... allowedColumns) {
        if (this.allowedColumns == null) {
            setAllowedColumns(new java.util.ArrayList<String>(allowedColumns.length));
        }
        for (String ele : allowedColumns) {
            this.allowedColumns.add(ele);
        }
        return this;
    }
<p>
The columns of the underlying table that can be used by collaborations or analysis rules.
</p>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setAllowedColumns(java.util.Collection)} or {@link #withAllowedColumns(java.util.Collection)} if you want
to override the existing values.
</p>

@param allowedColumns
       The columns of the underlying table that can be used by collaborations or analysis rules.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-cleanrooms/src/main/java/com/amazonaws/services/cleanrooms/model/CreateConfiguredTableRequest.java