Method push

src/layout/msWorkspace/portion.ts:125–137

(basis = 100, vertical?: boolean)

    }

    push(basis = 100, vertical?: boolean) {
        if (vertical === undefined) {
            vertical = !this.vertical;
        }

        if (this.children.length === 0) {
            this.children.push(new Portion(basis, vertical));
        }

        this.children.push(new Portion(basis, vertical));

        this.updateBorders();
    }

    pushVertical(basis = 100) {
        this.push(basis, true);