Creates an output string from a string format specified and input ports.
Format
This input contains the format string, that is the template that will be used to generated the output. Any part
of the template that is encapsulated in bracets will generate an input port. E.g. setting the string format to {Hours} hours ago
will create an input port called Hours.
Formatted
The formatted string, e.g. if the string format is {Hours} hours ago and the Hours input is connected to a value of 9 the
formatted string will be 9 hours ago.