defining a mesh. This is better practice than using arbitrary
MathTransform objects as it is well defined and allows for serialization
of the mesh to occur.
Former-commit-id: 5a61f3ae23 [formerly 8fb7eccb73] [formerly 6e5964df9d] [formerly 50765e8a34 [formerly 6e5964df9d [formerly 7e4abe637edacca71e1e1c98d99521cd33415fb0]]]
Former-commit-id: 50765e8a34
Former-commit-id: 87c83af55da8aec24c975aa2f80b06b4449fa969 [formerly cf440b3884]
Former-commit-id: 8f08fab0a7