performanceMark top-level property
dynamic
get
performanceMark
PerformanceMark
 is an abstract interface for PerformanceEntry
objects
with an entryType of "mark"
. Entries of this type are created by calling
performance.mark()
to add a named DOMHighResTimeStamp
(the mark) to the
performance timeline.
Implementation
_i2.dynamic get performanceMark => _i4.getProperty(
_self,
'PerformanceMark',
);