Checks labels

[ocots]

Ensure the names of the components are different from the name of the variable.

CTModels.jl/src/ocp/state.jl

Lines 64 to 66 in 9a7438d

	@ensure !__is_state_set(ocp) CTBase.UnauthorizedCall("the state has already been set.")
	@ensure n > 0 CTBase.IncorrectArgument("the state dimension must be greater than 0")
	@ensure size(components_names, 1) == n CTBase.IncorrectArgument(