module Github::Validations::Presence

def _validate_presence_of(*params)
  case params
  when Hash
    raise Github::Error::Validations.new(params)
  when Array
    params.each do |param|
      raise ArgumentError, "parameter cannot be nil" if param.nil?
    end
  end
end

def _validate_user_repo_params(user_name, repo_name)
  raise ArgumentError, "[user] parameter cannot be nil" if user_name.nil?
  raise ArgumentError, "[repo] parameter cannot be nil" if repo_name.nil?
end