return {
  tag = 'worldProperties',
  summary = 'Get the gravity of the World.',
  description = 'Returns the gravity of the World.',
  arguments = {},
  returns = {
    {
      name = 'xg',
      type = 'number',
      description = 'The x component of the gravity force.'
    },
    {
      name = 'yg',
      type = 'number',
      description = 'The y component of the gravity force.'
    },
    {
      name = 'zg',
      type = 'number',
      description = 'The z component of the gravity force.'
    }
  }
}
