public default V orElse(final V otherValue) {
        return this.isPresent() ? this.value() : otherValue;
    }
If the value is present, return the value, else return the provided value.

@param otherValue The value to return if the property is not present
@return A value
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/structure/Property.java