public Long getLong(String key) {
        Object obj = this.get(key);
        if (obj != null) {
            return Long.getLong(obj.toString());
        }
        return null;
    }
Transform context.

<p>configuration</p> is the global configuration when init transform processor
<p>extParams</p> is the ext params of each data
<p>runtimeParams</p> is the runtime outputs when processing by each component

The priority is runtimeParams > extParams > configuration.
inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/Context.java