Constant MAX_VIEW_COUNT 

pub const MAX_VIEW_COUNT: u32 = 300; // 300u32

The maximum number of ViewDescriptors a client can expect in a ViewTreeSnapshot.

There is a limit on the number of ViewDescriptors that can be included in a ViewTreeSnapshot due to the size restrictions of a FIDL channel. This limit was calculated by finding out the maximum number of ViewDescriptors which can be included in a ViewTreeSnapshot when the BUFFER_SIZE is 1.

Note: This value would have to adjusted when modifying ViewDescriptor.