Someone

    <bean name="abstractCoverLetterBuilder" abstract="true">        <constructor-arg index="0"                         value="${letters.dir}"/>        <constructor-arg index="1"                         value="${letters.defaultName}"/>    </bean>    <bean id="pdfCoverLetterBuilder"          class="com.x.x.x.core.builders.PdfCoverLetterBuilderImpl"          parent="abstractCoverLetter"/>    <bean id="stringCoverLetterBuilder"          class="com.x.x.x.core.builders.StringCoverLetterBuilderImpl"          parent="abstractCoverLetter"/>