public void setAllowedColumns(java.util.Collection<String> allowedColumns) {
        if (allowedColumns == null) {
            this.allowedColumns = null;
            return;
        }

        this.allowedColumns = new java.util.ArrayList<String>(allowedColumns);
    }
<p>
The columns of the underlying table that can be used by collaborations or analysis rules.
</p>

@param allowedColumns
       The columns of the underlying table that can be used by collaborations or analysis rules.
aws-java-sdk-cleanrooms/src/main/java/com/amazonaws/services/cleanrooms/model/CreateConfiguredTableRequest.java