Renders the component again whenever the client takes up work or falls idle, so that a progress indicator states
what the interface is waiting for without following exchanges of its own. Concurrent exchanges stand as a single
stretch of waiting, rather than as one stretch each.
Returns boolean
true if the client of the innermost enclosing Fetch context has exchanges in flight; false otherwise
States whether the shared fetch client is busy.
Renders the component again whenever the client takes up work or falls idle, so that a progress indicator states what the interface is waiting for without following exchanges of its own. Concurrent exchanges stand as a single stretch of waiting, rather than as one stretch each.