Utils.insertCSS(css)

Add css to a layer by wrapping it in a string and passing it as a parameter.
译：用一个字符串作为一个参数传递给层添加CSS。

layerA = new Layer
layerA.classList.add("testClass")

css = """
.testClass {
    border: 1px solid #000;
}
"""

print Utils.insertCSS(css)