public int getClassInfoIndex() {
		return classInfoIndex & 0xffff;
	}
The class_info_index item is used if the tag item is 'c'.
The class_info_index item must be a valid index into the
constant_pool table. The constant_pool entry at that index must be a
CONSTANT_Utf8_info (?4.4.7) structure representing the return descriptor
(?4.3.3) of the type that is reified by the class represented by this
element_value structure.
For example, 'V' for Void.class, 'Ljava/lang/Object;' for Object, etc.
@return a valid index into the constant_pool table
Ghidra/Processors/JVM/src/main/java/ghidra/javaclass/format/attributes/AnnotationElementValue.java