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: resolver.rb
    path of file: ./repos/powerstation/powerstation/lib/compiled-jruby/lib/ruby/stdlib/rubygems
    
    the code of the file until where you have to start completion: require 'rubygems/dependency'
require 'rubygems/exceptions'
require 'rubygems/util/list'

require 'uri'
require 'net/http'

##
# Given a set of Gem::Dependency objects as +needed+ and a way to query the
# set of available specs via +set+, calculates a set
    
  def resolve_for_conflict needed, specs, state # :nodoc:
    # We exhausted the possibles so it's definitely not going to work out,
    # bail out.
    raise Gem::ImpossibleDependenciesError.new state.dep, state.conflicts if
      state.possibles.empty?

    # Retry resolution with this spec and add it's dependencies
    spec, act = activation_request state.dep, state.possibles

    needed = requests spec, act, state.needed.dup
    specs = Gem::List.prepend state.specs, act

    return needed, specs
  end