You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: duckdb.rb
    path of file: ./repos/homebrew-core/Formula/d
    
    the code of the file until where you have to start completion: class Duckdb < Formula
  desc "Embeddable SQL OLAP Database Management System"
  homepage "https://www.duckdb.org"
  url "https://github.com/duckdb/d
    
  def install
    mkdir "build"
    cd "build" do
      system "cmake", "..", *std_cmake_args, "-DBUILD_EXTENSIONS='autocomplete;icu;parquet;json'",
             "-DENABLE_EXTENSION_AUTOLOADING=1",
             "-DENABLE_EXTENSION_AUTOINSTALL=1"
      system "make"
      system "make", "install"
      bin.install "duckdb"
      # The cli tool was renamed (0.1.8 -> 0.1.9)
      # Create a symlink to not break compatibility
      bin.install_symlink bin/"duckdb" => "duckdb_cli"
    end
  end