How to configure a ContextDataProvider for a specified Appender?

[a11enhuang]

I have a custom Appender and want to configure a specific ContextDataProvider for this Appender, how can I do it? After reading the documentation and code, I found that ContextDataProvider is loaded through SPI, which means that once I load it through SPI, it will work for all Appenders, but I only want a certain Appender to take effect.
I tried specifying a ContextDataProvider in the config file:

<LogCollector name="MyAppender">
    <ContextDataProvider class="com.xxx.MyContextDataProvider"/>
    <PatternLayout pattern="${CONSOLE_LOG_PATTERN}" charset="UTF-8"/>
</LogCollector>

Then I got an error:
ERROR StatusConsoleListener MyAppender contains an invalid element or attribute "ContextDataProvider"
what should I do?
The version of log4j I am using is v2.20

[ppkarwasz]

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