Spring's overriding bean

An example from official spring manual:

<bean id="inheritedTestBean" abstract="true"
    class="org.springframework.beans.TestBean">
  <property name="name" value="parent"/>
  <property name="age" value="1"/>
</bean>

<bean id="inheritsWithDifferentClass"
      class="org.springframework.beans.DerivedTestBean"
      parent="inheritedTestBean" init-method="initialize">
  <property name="name" value="override"/>
  <!-- the age property value of 1 will be inherited from  parent -->
</bean>

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