In a technical book, I have stumbled upon the following sentence:
Here, resource-specification is a statement or statements that declares and initializes a resource.
I'm a bit confused about how the verbs declares and initializes are used here. Their form (third person singular) assumes that they are linked to a singular noun. But can statement or statements really be treated as some sort of a compound singular noun?
In other words, is everything correct with the example above, or one should modify it in some way to make it more grammatically consistent?