TAB button action in FitNesse

For Picker field when we give inputs to the field we will get so many options, so we are providing complete input still the value is displayed but not picked up

Do we have a syntax to perform TAB button action in FitNesse

trying with below syntax but getting error Method send keys[1] not found in com.appiancorp.ps.automatedtest.fixture.TempoFixture.

| send keys | tab |