Review

class ToStringStyle {
    /**
     * <p>Sets whether the field separator should be added at the start 
     * of each buffer.</p>
     * 
     * @param fieldSeparatorAtStart  the fieldSeparatorAtStart flag
     * @since 2.0
     */
    protected void setFieldSeparatorAtStart(boolean fieldSeparatorAtStart) {
        this.fieldSeparatorAtStart = fieldSeparatorAtStart;
    }

}