Checks if @file supports
[thread-default contexts][g-main-context-push-thread-default-context].
If this returns %FALSE, you cannot perform asynchronous operations on
@file in a thread that has a thread-default context.
Return: Whether or not @file supports thread-default contexts.
Checks if @file supports [thread-default contexts][g-main-context-push-thread-default-context]. If this returns %FALSE, you cannot perform asynchronous operations on @file in a thread that has a thread-default context.
Return: Whether or not @file supports thread-default contexts.