@Override
	public DataType toDataType() throws DuplicateNameException, IOException {
		Structure structure = new StructureDataType("ext4_extent_idx", 0);
		structure.add(DWORD, "ei_block", null);
		structure.add(DWORD, "ei_leaf_lo", null);
		structure.add(WORD, "ei_leaf_hi", null);
		structure.add(WORD, "ei_unused", null);
		return structure;
	}
Return the calculated ei_leaf value by combining ei_leaf_lo and ei_leaf_hi

@return the calculated ei_leaf value by combining ei_leaf_lo and ei_leaf_hi
Ghidra/Features/FileFormats/src/main/java/ghidra/file/formats/ext4/Ext4ExtentIdx.java