Add Support for Multi-Line Object Oriented Function-Block Usage about blark HOT 2 CLOSED

Good find, @engineerjoe440!

Agreed on the whitespace not being an issue but rather the dotted method access on the return value of a function call. I haven't seen this in our PLC code, but this reference at least confirms it's a thing in TwinCAT:

• https://www.plccoder.com/fluent-code/
• With a nice sample project here: https://github.com/Barteling/Fluent-interface-with-ST/tree/master

from blark.

Ok.... so I oversimplified this, actually. It seems that chained method statements (as a whole) are the problem. That is, the following logic will cause a lark failure.

uut.DoSomething(input_1:='foo', input_2:='bar').DoSomethingElse(input_1:=5).Finish();

I think this will be best modified by way of the function_call grammar element, but will need to explore...

from blark.