如何通过Robot输入Unicode字符

from robot.api import TestSuite
from robot.libraries.BuiltIn import BuiltIn

def input_unicode_character(unicode_char):
    decimal_value = ord(unicode_char)
    unicode_char = chr(decimal_value)
    BuiltIn().run_keyword("Input Text", unicode_char)

suite = TestSuite("Example Suite")
suite.resource.imports.library("SeleniumLibrary")

test = suite.tests.create("Example Test")
test.keywords.create("Open Browser", "https://www.example.com", "chrome")
test.keywords.create("Input Unicode Character", "😊")

test.keywords.create("Close Browser")

suite.run()