code: function convertType (data) {
    switch (data.type) {
      case 'union':
        // If union of arrays
        if (Array.isArray(data.anyOf) && data.anyOf[0].type === 'array') {
          const items = data.anyOf.map(function (e) { return e.items })
          data.items = { anyOf: [] }
          data.items.anyOf = items
          data['type'] = 'array'
          delete data.anyOf
        } else {
          data['type'] = 'object'
        }
        break
      case 'nil':
        data['type'] = 'null'
        break
      case 'file':
        data = convertFileType(data)
        break
    }
    return data
  }
docs: Change RAML type of data to valid JSON schema type.
  
  @param  {Object} data
  @returns  {Object}