Error when defining custom methods in Tasks and Workflows

[geomagilles]

the following code

const { Task } = require("zenaton");

module.exports = Task("TaskA", {
  handle: async function() {
    console.log("Task A starts");

    await this.test(0);

    console.log("Task A ends");
    return 0;
  },
  test: async function(a) {
    if (0 <= a) {
      console.log("1");
    } else {
      console.log("2");
    }
  }
});

returns an error Error: "test" is defined more than once in "TaskA" task. Same with workflows.

It should work.