.budget_model.Budget
Required. The updated budget object.
The budget to update is specified by the budget
name in the budget.
update_mask
.field_mask.FieldMask
Optional. Indicates which fields in the provided budget to
update. Read-only fields (such as name) cannot be
changed. If this is not provided, then only fields with
non-default values from the request are updated. See
https://developers.google.com/protocol-buffers/docs/proto3#default
for more details about default values.
