Emit a log event at log level LogLevel.debug.

Parametersformata message format using new-style (PEP 3101) formatting. The logging event (which is a dict) is used to render this format string.
kwargsadditional key/value pairs to include in the event. Note that values which are later mutated may result in non-deterministic behavior from observers that schedule work for later execution.
API Documentation for Twisted, generated by pydoctor at 2017-09-23 19:45:03.