@Override
	public DataType toDataType() throws DuplicateNameException, IOException {
		Structure structure = new StructureDataType("annotations_directory_item_" + fieldsSize +
			"_" + annotatedMethodsSize + "_" + annotatedParametersSize, 0);
		structure.add(DWORD, "class_annotations_off", null);
		structure.add(DWORD, "fields_size", null);
		structure.add(DWORD, "annotated_methods_size", null);
		structure.add(DWORD, "annotated_parameters_size", null);
		int index = 0;
		for (FieldAnnotationsItem field : fieldAnnotations) {
			structure.add(field.toDataType(), "field_" + index, null);
			++index;
		}
		index = 0;
		for (MethodAnnotationsItem method : methodAnnotations) {
			structure.add(method.toDataType(), "method_" + index, null);
			++index;
		}
		index = 0;
		for (ParameterAnnotationsItem parameter : parameterAnnotations) {
			structure.add(parameter.toDataType(), "parameter_" + index, null);
			++index;
		}
		structure.setCategoryPath(new CategoryPath("/dex/annotations_directory_item"));
		return structure;
	}
https://android.googlesource.com/platform/art/+/master/libdexfile/dex/dex_file_structs.h#209
Ghidra/Features/FileFormats/src/main/java/ghidra/file/formats/android/dex/format/AnnotationsDirectoryItem.java