New: 98,000+ skills indexed from GitHub repos with 100+ stars · every skill safety-checkedBrowse top skillsTop skills
Esc to closeBrowse all skills
Submit a skillBrowse skills
Submit a skillBrowse skills

Agent skill

Remove Unused Object Overrides

by nwjs in nwjs/chromium.src

Identify and safely remove unreferenced Java Object overrides (equals, hashCode, toString) in Clank to eliminate dead virtual methods from release DEX bytecode while strictly preserving…

BSD-3-ClauseAuto-check passedDevelopment

Install Remove Unused Object Overrides

skills CLI
$ npx skills add nwjs/chromium.src --skill remove-unused-object-overrides -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install nwjs/chromium.src remove-unused-object-overrides --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/nwjs/chromium.src.git skills-src && mkdir -p .claude/skills && cp -r skills-src/agents/projects/code-health/remove-unused-object-overrides .claude/skills/remove-unused-object-overrides && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
remove-unused-object-overrides
GitHub stars
160
Token cost
~1.1k tokens
SKILL.md length
455 words
Files
4 (incl. scripts, references)
Skills in repo
64
Repo updated
First seen
Licence
BSD-3-Clause

At a glance

Identify and safely remove unreferenced Java Object overrides (equals, hashCode, toString) in Clank to eliminate dead virtual methods from release DEX bytecode while strictly preserving…

  • Works in 6 steps: Workspace Preparation → Discovery & Batch Selection → Refactoring & Implementation → …
  • Tasks that involve Code quality
  • SKILL.md covers Overview, Relevant Resources & Style… and Workflow
  • Runs Python scripts from its folder; calls git

What it does

Remove Unused Object Overrides is an agent skill from nwjs/chromium.src. Identify and safely remove unreferenced Java Object overrides (equals, hashCode, toString) in Clank to eliminate dead virtual methods from release DEX bytecode while strictly preserving equals/hashCode symmetry.

Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files, including scripts and reference files (for example `references/automated_review.md`, `references/patterns.md` and `scripts/find_candidates.py`).

It sits in Development, covering Code quality. It works with Java. The repository describes itself as: Chromium codebase with NW.js modifications. Based on https://chromium.googlesource.com/chromium/src.git. The licence is BSD-3-Clause.

When your agent uses it

  • Tasks that involve Code quality

Example prompts

  • “/remove-unused-object-overrides”

Requirements

  • Python 3

Workflow steps

6 steps, taken from the step headings in SKILL.md.

  1. Workspace Preparation
  2. Discovery & Batch Selection
  3. Refactoring & Implementation
  4. Validation
  5. Verification
  6. Submission

What it can do on your machine

Read from SKILL.md and the folder at commit a9e8946. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships 1 file in scripts/ (Python), which the agent can run.

    Shell commands in SKILL.md call:

    • git

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md. Its commands use git, which can reach the network depending on how they are called.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Remove Unused Object Overrides loads about 1.1k tokens when it runs, and up to ~2.9k if it reads all its reference files. Until then it costs about 61 tokens; SKILL.md has 455 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~61
When it runs · the whole SKILL.md, loaded when a task matches
~1.1k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~2.9k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from nwjs/chromium.src at commit a9e8946, republished under its BSD-3-Clause licence (© nwjs). 455 words, ~1,089 tokens.

Download SKILL.mdSave it as .claude/skills/remove-unused-object-overrides/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.
name
remove-unused-object-overrides
description
Identify and safely remove unreferenced Java Object overrides (equals, hashCode, toString) in Clank to eliminate dead virtual methods from release DEX bytecode while strictly preserving equals/hashCode symmetry.

Code Health: Remove Unused Object Overrides

Identify and safely remove unreferenced Java Object overrides (equals, hashCode, toString) in Clank to eliminate dead virtual methods from release DEX bytecode while strictly preserving method symmetry.

Overview

Overriding equals(), hashCode(), or toString() on UI property holders and data classes adds virtual methods and metadata overhead in DEX bytecode. In many cases, these overrides were added during initial prototyping or solely for test verifications and are never invoked in production logic. Safely removing unreferenced overrides reduces release DEX size while maintaining object identity semantics.

Goal: Clean up all unreferenced Object overrides in UI data holders, properties, and model objects where equality is not needed in production code.

Relevant Resources & Style Guides

Workflow

[!IMPORTANT] Execution Protocol: Execute all steps sequentially one by one. Do not skip any step.

Step 1: Workspace Preparation

Follow the workspace preparation steps in workspace_preparation.md to ensure a clean and updated environment.

Step 2: Discovery & Batch Selection

Follow the Discovery & Batch Selection workflow. Present the candidates and ask for explicit approval before proceeding.

Step 3: Refactoring & Implementation

Process candidates case-by-case (one file at a time), applying modifications cleanly:

  1. Safety Audit:
    • Follow Rule 2 in patterns.md to audit all occurrences: check hashed collections (HashMap, HashSet), direct/indirect hashing (Objects.hashCode), collection lookups (List.contains, List.indexOf), state equality comparisons (Objects.equals), and serialization (Proto/Mojo/JSON).
    • If equals() is required in production (e.g. Toolbar snapshot capture tokens) $\rightarrow$ Keep BOTH equals() and hashCode().
    • If equals() is only needed for tests or not needed at all $\rightarrow$ Remove BOTH equals() and hashCode().
  2. Apply Code Edits:
    • Remove the unreferenced equals(), hashCode(), or toString() methods.
    • Clean up unused imports (such as java.util.Objects).
  3. Repair Unit Tests:
    • If Mockito verify() calls fail due to missing equals(): wrap the argument with refEq(expected).
    • If JUnit assertEquals() calls fail: replace with explicit field assertions or a local assertion helper method.
Show full SKILL.md (139 more words)Show less
Step 4: Validation
  1. Code Formatting: Run git cl format to format changes.
  2. Mandatory Final Review: Follow the Automated Review Protocol to delegate a final review of the patch to the generalist sub-agent. Proceed only after it returns PASS.
Step 5: Verification

Follow the Verification workflow.

Step 6: Submission

Invoke the Submission workflow. Pass the following context variables:

  • Skill Name: remove-unused-object-overrides
  • Branch Name: cleanup-remove-object-overrides-[component-name]
  • Commit Hashtag: Code Health
  • Cleanup Title: Remove unused Object overrides in [Component/Directory]
  • Cleanup Description: Remove unreferenced Java Object overrides (equals, hashCode, toString) in [Component/Directory] to eliminate dead virtual methods from release DEX bytecode while strictly preserving method symmetry.
  • Parent Bug: 544923924
  • Bug ID: "none" (to skip creating a new bug, using only the parent bug)
  • Omit Skill Attribution: "true"
  • Cleaned Component: The parent directory of the batch.
  • File Count: Number of files cleaned up.

© nwjs, BSD-3-Clause. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 3 other files (scripts, references) in agents/projects/code-health/remove-unused-object-overrides of nwjs/chromium.src.

  • SKILL.md
  • references/automated_review.md
  • references/patterns.md
  • scripts/find_candidates.py

Open the folder on GitHubat commit a9e8946

Compare with similar skills

Remove Unused Object Overrides next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Remove Unused Object Overrides compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Remove Unused Object Overrides this skillnwjs/chromium.src160—~1.1kAutomated safety check: PassBSD-3-Clause
Code Review Skillawesome-skills/code-review-skill2.1k—~2.8kAutomated safety check: NotesMIT
Coding Standardsapache/shardingsphere21k—~2.2kAutomated safety check: PassApache-2.0
New Rule for sonar-javaSonarSource/sonar-java1.2k—~833Automated safety check: PassCustom licence
Cross-Language Coding Standardszereight/gitlab-mcp2k1 repos~1.4kAutomated safety check: PassMIT
Code Qualitypiomin/claude-ai-spring-boot1.3k—~2.2kAutomated safety check: PassApache-2.0

Similar skills

  • Code Review Skill

    awesome-skills/code-review-skill

    Provides comprehensive code review guidance for React 19, Vue 3, Angular 17+, Svelte 5, Rust, TypeScript, Java, Java 8, PHP, Ruby, Rails, Python, Django, FastAPI, Go, C/.NET, Kotlin, Swift, Dart…

    2.1k GitHub stars~2.8k tokensUpdated 1 mo ago
    DevelopmentAuto-check: notes

  • Coding Standards

    apache/shardingsphere

    Apply Apache ShardingSphere's written coding standards when explicitly requested, or when code-implementation routes task-changed production, test, script, build, generated, or Maven POM artifacts…

    21k GitHub stars~2.2k tokensUpdated today
    DevelopmentAuto-check passed

  • New Rule for sonar-java

    SonarSource/sonar-java

    Official

    Sets the sonar-java conventions for adding an analyzer rule: metadata from rule-api, test locations, MethodMatchers and what not to commit or change.

    1.2k GitHub stars~833 tokensUpdated today
    DevelopmentAuto-check passed

  • Cross-Language Coding Standards

    zereight/gitlab-mcp

    Shared reference for naming, function size, complexity and error handling rules that reviewer agents apply across TypeScript, Python, Go, Rust, Java, C# and Swift.

    2k GitHub starsUsed in 1 repo~1.4k tokens
    DevelopmentAuto-check passed

  • Code Quality

    piomin/claude-ai-spring-boot

    Comprehensive code review for Java - clean code principles, API contracts, null safety, exception handling, and performance.

    1.3k GitHub stars~2.2k tokensUpdated 5 mo ago
    DevelopmentAuto-check passed

  • Android Code Quality Checker

    wordpress-mobile/WordPress-Android

    Runs detekt, checkstyle, and Android lint together, reads their reports, and proposes approved fixes grouped by file.

    3.2k GitHub stars~587 tokensUpdated yesterday
    DevelopmentAuto-check passed

More from nwjs/chromium.src

All 64 skills in this repo

  • Analyzing SQL Traces

    nwjs/chromium.src

    Extracts raw trace data from Perfetto traces, runs arbitrary SQL queries for custom follow-up analysis, and applies expert cognitive principles (Tiered Flow Analysis, Semantic Mismatch, Redundancy)…

    160 GitHub stars~2.9k tokensUpdated 6 days ago
    Auto-check passed

  • Chrome Performance Optimizer

    nwjs/chromium.src

    Autonomous multi-agent performance optimization loop for Chromium and V8.

    160 GitHub stars~4.2k tokensUpdated 6 days ago
    Auto-check passed

  • Automated Tracing

    nwjs/chromium.src

    Automated Tracing & Performance Telemetry in Chromium using Perfetto and Telemetry benchmarks.

    160 GitHub stars~1.5k tokensUpdated 6 days ago
    Auto-check passed

  • Chrome Releases

    nwjs/chromium.src

    Queries Chrome commit, version, release, and milestone metadata.

    160 GitHub stars~1.3k tokensUpdated 6 days ago
    Auto-check passed

  • Chromium Docs

    nwjs/chromium.src

    Search and reference Chromium documentation from the local docs index, including design docs, APIs, and development guides.

    160 GitHub stars~1.2k tokensUpdated 6 days ago
    Auto-check passed

  • Gn Deps Debugging

    nwjs/chromium.src

    Diagnose Chromium GN dependency and include-visibility failures, including BUILD.gn deps/publicdeps, DEPS include rules, private headers, and circular dependencies.

    160 GitHub stars~1.5k tokensUpdated 6 days ago
    Auto-check passed

Works with

Categories

Questions about Remove Unused Object Overrides

What does Remove Unused Object Overrides do?

Identify and safely remove unreferenced Java Object overrides (equals, hashCode, toString) in Clank to eliminate dead virtual methods from release DEX bytecode while strictly preserving…. src. Identify and safely remove unreferenced Java Object overrides (equals, hashCode, toString) in Clank to eliminate dead virtual methods from release DEX bytecode while strictly preserving equals/hashCode symmetry.

When should I use Remove Unused Object Overrides?

Remove Unused Object Overrides fits situations like: tasks that involve Code quality.

How do I install Remove Unused Object Overrides in Claude Code?

Run `npx skills add nwjs/chromium.src --skill remove-unused-object-overrides -a claude-code`. Or copy the skill folder (agents/projects/code-health/remove-unused-object-overrides in nwjs/chromium.src) into .claude/skills/remove-unused-object-overrides in your project. Claude Code loads it when a task matches its description.

How do I install Remove Unused Object Overrides in Codex?

Run `npx skills add nwjs/chromium.src --skill remove-unused-object-overrides -a codex`. Or copy the skill folder (agents/projects/code-health/remove-unused-object-overrides in nwjs/chromium.src) into .agents/skills/remove-unused-object-overrides in your project. Codex loads it when a task matches its description.

Can I use Remove Unused Object Overrides in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add nwjs/chromium.src --skill remove-unused-object-overrides -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/remove-unused-object-overrides, .gemini/skills/remove-unused-object-overrides, .github/skills/remove-unused-object-overrides and .opencode/skills/remove-unused-object-overrides in your project.

What does Remove Unused Object Overrides need to run?

Going by SKILL.md and its folder, Remove Unused Object Overrides needs Python for the scripts in its folder and the command-line tools its instructions call (git). Our summary lists: Python 3.

Does Remove Unused Object Overrides access the network?

SKILL.md contains no URLs. Its commands use git, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Remove Unused Object Overrides safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Remove Unused Object Overrides use?

Remove Unused Object Overrides is published under the BSD-3-Clause licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Remove Unused Object Overrides use?

About 1.1k tokens (SKILL.md is roughly 4.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1.8k tokens, read only when the agent opens those files.

What are the alternatives to Remove Unused Object Overrides?

Skills that share tags, products or a category with Remove Unused Object Overrides: Code Review Skill (awesome-skills/code-review-skill, 2.1k stars), Coding Standards (apache/shardingsphere, 21k stars), New Rule for sonar-java (SonarSource/sonar-java, 1.2k stars) and Cross-Language Coding Standards (zereight/gitlab-mcp, 2k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Remove Unused Object Overrides?

nwjs (a GitHub organization) maintains it in nwjs/chromium.src, which has 160 GitHub stars. The repository holds 64 skills in this directory. The repository was last updated on October 3, 2026.

Source: nwjs/chromium.src on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.