A callback function which will be invoked when there are changes matching
								any of the requested queries. The callback will be passed an array
							of Summary objects that describe the mutations.
Defaults to false. Configures whether changes made during the course of
								the callback invocation are observed for potential delivery in the next
							callback invocation.
Defaults to false. If true, getOldPreviousSibling can be called
							with nodes returned in removed and reparented.
A non-empty array of query request objects that define what elements will be monitored for mutations.
Defaults to window.document. The root of the sub-tree to observe.
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The IMutationSummaryOptions defines the set of configuration options that can be passed to the MutationSummary class.