options.rb

option :foo_a
option :foo_b, value: {type: Integer}

option :bar_x, value: {type: String}
option :bar_y
option :bar_z, value: {type: Integer}

attr_reader :kwargs

def self.from_options(options)
  new \
    foo: {
      a: options[:foo_a],
      b: options[:foo_b],
    },

    bar: {
      x: options[:bar_x],
      y: options[:bar_y],
      z: options[:bar_z]
    }
end

def initialize(kwargs)
  @kwargs = kwargs
end