log abstract method
Log error, warning, info, debug, trace, and fatal messages.
You can provide messages for different log levels, and only messages with non-null values will be logged.
e is for error messages.
w is for warning messages.
i is for info messages.
d is for debug messages.
t is for trace messages.
f is for fatal messages.
Implementation
void log({String? e, String? w, String? i, String? d, String? t, String? f});