【RF库Built-In测试】Catenate

Name:
Catenate
Source:
BuiltIn <test library>
Arguments:
[ *items ]
Catenates the given items together and returns the resulted string.
By default, items are catenated with spaces, but if the first item contains the string 'SEPARATOR=<sep>', the separator '<sep>' is used. Items are converted into strings when necessary.

场景1：连接多个字符串