function isAfterLastUsedArg(variable) {
			const def = variable.defs[0];
			const params = sourceCode.getDeclaredVariables(def.node);
			const posteriorParams = params.slice(params.indexOf(variable) + 1);

			// If any used parameters occur after this parameter, do not report.
			return !posteriorParams.some(
				v => v.references.length > 0 || v.eslintUsed,
			);
		}
Checks whether the given variable is after the last used parameter.
@param {eslint-scope.Variable} variable The variable to check.
@returns {boolean} `true` if the variable is defined after the last
used parameter.