An ISourceElementGroup is used to indicate that consecutive similar elements may be collapsed together. This is a parallel option to the method by which individual multi-line elements may be collapsed separately.
This interface contains no members. It only exists to differentiate
group objects from the ISourceElement
objects that are contained
within them.
ISourceViewDriver
has several pairs of methods that take either standard ISourceElements or
ISourceElementGroups as parameters.
Commonly, an ISourceViewDriver class will instantiate a single
instance for each type of group by calling
static final ISourceElementGroup group = new ISourceElmentGroup() {};
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