How to use driver.elementEnabled method in Appium Android Driver

...184        (await driver.elementDisplayed(el)).should.not.be.ok;185      });186      it('should return true when the element is enabled', async function () {187        let el = await driver.findElement('link text', 'i am a link');188        (await driver.elementEnabled(el)).should.be.ok;189      });190      it('should return false when the element is not enabled', async function () {191        let el = await driver.findElement('id', 'fbemail');192        await driver.execute(`$('#fbemail').attr('disabled', 'disabled');`);193        (await driver.elementEnabled(el)).should.not.be.ok;194      });195      it('should return the active element', async function () {196        let testText = 'hi there';197        let el = await driver.findElement('id', 'i_am_a_textbox');198        await driver.setValue(testText, el);199        let activeEl = await driver.active();200        (await driver.getAttribute('value', activeEl)).should.be.equal(testText);201      });202      it('should properly navigate to anchor', async function () {203        let curl = await driver.getUrl();204        await driver.setUrl(curl);205      });206      it('should be able to refresh', async function () {207        await driver.refresh();...

...55  describe('elementEnabled', () => {56    it('should return true if element enabled', async () => {57      sandbox.stub(driver, 'getAttribute');58      driver.getAttribute.returns('true');59      await driver.elementEnabled('el1').should.become(true);60      driver.getAttribute.calledWithExactly('enabled', 'el1').should.be.true;61    });62    it('should return false if element not enabled', async () => {63      sandbox.stub(driver, 'getAttribute');64      driver.getAttribute.returns('false');65      await driver.elementEnabled('el1').should.become(false);66      driver.getAttribute.calledWithExactly('enabled', 'el1').should.be.true;67    });68  });69  describe('elementSelected', () => {70    it('should return true if element selected', async () => {71      sandbox.stub(driver, 'getAttribute');72      driver.getAttribute.returns('true');73      await driver.elementSelected('el1').should.become(true);74      driver.getAttribute.calledWithExactly('selected', 'el1').should.be.true;75    });76    it('should return false if element not selected', async () => {77      sandbox.stub(driver, 'getAttribute');78      driver.getAttribute.returns('false');79      await driver.elementSelected('el1').should.become(false);...

...59    (await driver.elementDisplayed(el)).should.be.ok;60  });61  it('should confirm that the disabled button is disabled', async function () {62    let el = await driver.findElement('accessibility id', 'DisabledButton');63    (await driver.elementEnabled(el)).should.not.be.ok;64  });65  it('should confirm that the compute sum button is enabled', async function () {66    let el = await driver.findElement('accessibility id', 'ComputeSumButton');67    (await driver.elementEnabled(el)).should.be.ok;68  });69  it('should interact with alert', async function () {70    let button = (await driver.findElements('class name', 'UIAButton'))[1];71    await driver.click(button);72    await driver.postAcceptAlert();73    await driver.click(button);74    let text = await driver.getAlertText();75    text.should.include('Cool title');76    text.should.include('this alert is so cool.');77    await driver.postDismissAlert();78  });79  it('should find alert like other elements', async function () {80    try {81      let button = (await driver.findElements('class name', 'UIAButton'))[1];...