public final Long getLong(CompoundName name, Long defaultValue) {
        return asLong(get(name), defaultValue);
    }
Returns a property as a Long.

@param name         the property name
@param defaultValue the value to return if this property is null
@return the integer value for this name
@throws NumberFormatException if the given parameter exists but have a value which
                              is not parseable as a number
container-core/src/main/java/com/yahoo/processing/request/Properties.java