protected abstract fun search(subjectProvider: SubjectProvider<T>, searchCriterion: S): Int
Searches for something matching the given searchCriterion in the given subjectProvider's subject and returns the number of occurrences.
subjectProvider - The plant or rather its subject in which we shall look for something
matching the given searchCriterion.
searchCriterion - The search criterion used to determine whether something matches or not.
Return
The number of times the searchCriterion matched in the subjectProvider's subject.