module Github::Validations::Presence

def assert_presence_of(*args)


assert_presence_of user, repo
assert_presence_of user: '...', repo: '...'
== Example

Hash/Array of arguments to be checked against nil and empty string
== Parameters

Ensure that esential arguments are present before request is made. 
def assert_presence_of(*args)
  hash = args.last.is_a?(::Hash) ? args.pop : {}
  errors = hash.select { |key, val| val.to_s.empty? }
  raise Github::Error::Validations.new(errors) unless errors.empty?
  args.each do |arg|
    raise ArgumentError, "parameter cannot be nil" if arg.nil?
  end
end