public Boolean getBoolean(Boolean defaultValue) {
        Boolean value = local.getBoolean();
        if (value == null) {
            value = global.getBoolean(defaultValue);
        }
        return value;
    }
@param defaultValue Default Value
@return Returns the value as Boolean. If not value is set (either global or worker specific),
    then returns the default value.
client/src/main/java/com/netflix/conductor/client/config/PropertyFactory.java