acquire(node, inner) {

        /**
         * predicate
         * @param {Scope} testScope scope to test
         * @returns {boolean} predicate
         */
        function predicate(testScope) {
            if (testScope.type === "function" && testScope.functionExpressionScope) {
                return false;
            }
            return true;
        }

        const scopes = this.__get(node);

        if (!scopes || scopes.length === 0) {
            return null;
        }

        // Heuristic selection from all scopes.
        // If you would like to get all scopes, please use ScopeManager#acquireAll.
        if (scopes.length === 1) {
            return scopes[0];
        }

        if (inner) {
            for (let i = scopes.length - 1; i >= 0; --i) {
                const scope = scopes[i];

                if (predicate(scope)) {
                    return scope;
                }
            }
        } else {
            for (let i = 0, iz = scopes.length; i < iz; ++i) {
                const scope = scopes[i];

                if (predicate(scope)) {
                    return scope;
                }
            }
        }

        return null;
    }
acquire scope from node.
@function ScopeManager#acquire
@param {Espree.Node} node node for the acquired scope.
@param {?boolean} [inner=false] look up the most inner scope, default value is false.
@returns {Scope?} Scope from node