class Hermod::XmlSectionBuilder

def monetary_node(name, options={})

Returns nothing you should rely on

options - a hash of options used to set up validations.
name - the name of the node. This will become the name of the method on the XmlSection.

Public: defines a node for sending a monetary value to HMRC 
def monetary_node(name, options={})
  validators = [].tap do |validators|
    validators << Validators::NonNegative.new unless options.fetch(:negative, true)
    validators << Validators::NonZero.new unless options.fetch(:zero, true)
    validators << Validators::WholeUnits.new if options[:whole_units]
  end
  create_method(name, [], validators, options) do |value, attributes|
    value ||= value.to_i
    if options[:optional] && value == 0
      [nil, attributes]
    else
      [sprintf(format_for(:money), value), attributes]
    end
  end
end