public int getConstantValueIndex() {
		return constantValueIndex & 0xffff;
	}
The const_value_index item is used if the tag item is one of 
		'B', 
		'C', 
		'D',
		'F', 
		'I', 
		'J', 
		'S', 
		'Z', 
		's'. 
The value of the const_value_index item must be
a valid index into the constant_pool table. 
<p>
The constant_pool entry at that index must be of the correct entry type 
for the field type designated by the tag item, as specified in Table 4.24.
@return a valid index into the constant_pool table
Ghidra/Processors/JVM/src/main/java/ghidra/javaclass/format/attributes/AnnotationElementValue.java