@Override
	public DataType toDataType() throws DuplicateNameException, IOException {
		String name = "CONSTANT_Long_info";
		Structure structure = new StructureDataType( name, 0 );
		structure.add( BYTE,  "tag", null );
		structure.add( DWORD, "high_bytes", null );
		structure.add( DWORD, "low_bytes", null );
		return structure;
	}
The unsigned high_bytes and low_bytes items of the CONSTANT_Long_info
structure together represent the value of the long constant
<pre>
		((long) high_bytes << 32) + low_bytes
</pre>
where the bytes of each of high_bytes and low_bytes are stored in big-endian
(high byte first) order.
@return the long value
Ghidra/Processors/JVM/src/main/java/ghidra/javaclass/format/constantpool/ConstantPoolLongInfo.java