freezed_annotation: null | object | string
Version range of the package or SDK to use
This appears to be some sort of help for the yaml file structure. I can't really say how long ago, several months, but at one time ctrl-Q did indeed produce package documentation when pressed.
IntelliJ IDEA 2020.1 (Ultimate Edition)
Build #IU-201.6668.121, built on April 8, 2020
Licensed to Wayne Werner
Subscription is active until January 9, 2021
Runtime version: 11.0.6+8-b765.25 amd64
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
Windows 10 10.0
GC: ParNew, ConcurrentMarkSweep
Memory: 1973M
Cores: 8
Registry: ide.editor.tabs.open.at.the.end=true, debugger.watches.in.variables=false, ide.tooltip.initialDelay=1003
Non-Bundled Plugins: Mongo Plugin, com.bloc.intellij_generator_plugin, com.jetbrains.plugins.ini4idea, com.zll.format, Pythonid, Dart, io.flutter, org.jetbrains.kotlin, org.intellij.scala, de.mariushoefler.flutter_enhancement_suite, com.intellij.plugins.html.instantEditing, com.jetbrains.plugins.jade, com.dmarcotte.handlebars```