@Override
    public String toString() {
        return "ImmutableNode(" +
                "key=" + this.key + ", " +
                "value=" + this.value + ", " +
                "expireAt=" + this.expireAt + ", " +
                "contexts=" + this.contexts + ")";
    }
The character which separates each part of a permission node
common/src/main/java/me/lucko/luckperms/common/node/AbstractNode.java