How to use the roosterjs-editor-api.setIndentation function in roosterjs-editor-api

document.getElementById('indentButton').addEventListener('click', function() {
        setIndentation(getCurrentEditor(), Indentation.Increase);
    });

        handleChange: (editor) => setIndentation(editor, Indentation.Decrease)
    },

handleEvent: (event, editor) => {
        setIndentation(editor, Indentation.Decrease);
        event.rawEvent.preventDefault();
    },
};

        onClick: editor => setIndentation(editor, Indentation.Decrease),
    },

        handleChange: (editor) => setIndentation(editor, Indentation.Increase)
    },

    onClick: editor => setIndentation(editor, Indentation.Increase),
};

        onClick: editor => setIndentation(editor, Indentation.Increase),
    },

    onClick: editor => setIndentation(editor, Indentation.Decrease),
};

document.getElementById('outdentButton').addEventListener('click', function() {
        setIndentation(getCurrentEditor(), Indentation.Decrease);
    });

handleEvent: (event, editor) => {
        setIndentation(editor, Indentation.Increase);
        event.rawEvent.preventDefault();
    },
};