if character, the textual message to be output,
or the format for the ... arguments; if of any other
type, will be output as is prefixed by the expression
that was used for the function call
...
if present, and msg is ofcharacter, msg is
interpreted as a format and the ... values are
passed to it to form the actual message; if msg is any
other type, all ... values are output the same
way like msg
logger
the name of the logger to which we pass the
record