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: requirements_updater.rb
    path of file: ./repos/dependabot-core/cargo/lib/dependabot/cargo/update_checker
    
    the code of the file until where you have to start completion: # typed: true
# frozen_string_literal: true

################################################################################
# For more details on rust version constraints, see:                           #
# - https://doc.rust-lang.org/cargo/reference/spec
    
        def updated_requirements
          return requirements if update_strategy == :lockfile_only

          # NOTE: Order is important here. The FileUpdater needs the updated
          # requirement at index `i` to correspond to the previous requirement
          # at the same index.
          requirements.map do |req|
            req = req.merge(source: updated_source)
            next req unless target_version
            next req if req[:requirement].nil?

            # TODO: Add a widen_ranges options
            if update_strategy == :bump_versions_if_necessary
              update_version_requirement_if_needed(req)
            else
              update_version_requirement(req)
            end
          end