Stop referring to _value in comments where it's not visible.
Stop referring to _value in comments where it's not visible.

QuiverDart/quiver_check,trinarytree/quiver-dart,QuiverDart/quiver_async,jtmcdole/quiver-dart,googlearchive/quiver_hashcode,googlearchive/quiver_optional,googlearchive/quiver_async,willyp564/quiver-dart,googlearchive/quiver_time,QuiverDart/quiver_iterables,QuiverDart/quiver_time,QuiverDart/quiver_mirrors,cbracken/quiver-dart,matgray/quiver_iterables,googlearchive/quiver_pattern,yjbanov/quiver_hashcode,googlearchive/quiver_mirrors,kevmoo/quiver-dart,googlearchive/quiver_hashcode,googlearchive/quiver_strings,google/quiver-dart,QuiverDart/quiver_iterables,alechenninger/quiver-dart,googlearchive/quiver_pattern,willyp564/quiver-dart,googlearchive/quiver_strings,googlearchive/quiver_iterables,googlearchive/quiver_cache,QuiverDart/quiver_mirrors,googlearchive/quiver_optional,googlearchive/quiver_collection,QuiverDart/quiver_collection,yjbanov/quiver_async,QuiverDart/quiver_io,QuiverDart/quiver_check,googlearchive/quiver_io,alechenninger/quiver-dart,googlearchive/quiver_io,QuiverDart/quiver_hashcode,QuiverDart/quiver_hashcode,EmmanuelOga/quiver-dart,googlearchive/quiver_mirrors,yjbanov/quiver_hashcode,googlearchive/quiver_collection,googlearchive/quiver_check,jtmcdole/quiver-dart,matgray/quiver_iterables,googlearchive/quiver_cache,QuiverDart/quiver_async,QuiverDart/quiver_optional,QuiverDart/quiver_strings,QuiverDart/quiver_collection,QuiverDart/quiver_time,cbracken/quiver-dart,QuiverDart/quiver_optional,googlearchive/quiver_time,yjbanov/quiver_async,QuiverDart/quiver_strings,EmmanuelOga/quiver-dart,googlearchive/quiver_check,QuiverDart/quiver_pattern,QuiverDart/quiver_pattern,QuiverDart/quiver_cache,QuiverDart/quiver_cache,trinarytree/quiver-dart,QuiverDart/quiver_io,googlearchive/quiver_async,googlearchive/quiver_iterables,kevmoo/quiver-dart