Returns the parent section block from which the execution of this block was started.
It is the block, which was being executed immediately before this block and whose
processing was interrupted by it.
In particular:
- If this section block is the template's root block,
the property returns
null
- If it is a part of a Folder- or Iterator-section
(i.e. body-, header-, footer- or else-block), this property
returns the block where this section is contained.
- If this block is a part of a stock-section (Folder or Iterator), the property returns
the section block containing the Call Stock-Section component which called this stock-section.