class Configure

Clients should first use the Allocator protocol to register a

BufferCollection. This function will fail with BAD_OPERATION unless all clients of the

BufferCollection have set their constraints.

Afterwards, clients should create and configure the images that will

eventually be rendered to using this method. All the buffers in the

collection from 0 to (buffer_count-1) may be used for screen capture.

Clients are responsible for determining the rotation of the display,

and applying the corrective rotation. For instance, if the display is

mounted 90 degrees clockwise (the "top" is on the right, when looking

at the display), then the client should specify a 270 degree rotation

to account for it.

Similarly, the clients are responsible for specifying a buffer big

enough for the rotated image. If the buffer is too small, a best effort

attempt will be made to render the image.

Finally, clients request the server to render the current screen to the

shared buffers using [`GetNextFrame`].

[`Configure`] can be called again with a new BufferCollectionImportToken

if the client wishes to change any of the configuration settings. In

this case all the buffers from the previous call to [`Configure`] will

be released.