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BodyTag Interface

 
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<tag>
<name>SmilyTag</name>
<tag-class>com.enthuware.ctags.SmilyTag</tag-class>
<description>Replaces emoticons such as , , and with images.
</description>
<body-content>tagdependent</body-content>
<attribute>
<name>name</name>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
</tag>


Which of the following statements regarding the above tag are correct?Select 2 correct options.

A.It is an empty tag.
B.It may be used as an empty tag.
C.It must have a body
D.It must implement BodyTag interface.
E.It may take an attribute named 'name'. But if present, its value must be dynamic.

Ans given are B and D
But
How can we say that, It must implement Body Tag Interface
by seeing the above code..?
 
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To me, only B is correct. It could implement any of SimpleTag, IterationTag or BodyTag.
 
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