function startNewReportsBuffering() {
			reportsBuffer = {
				upper: reportsBuffer,
				inExpressionNodes: [],
				reports: [],
			};
		}
Starts a new reports buffering. Warnings will be stored in a buffer instead of being reported immediately.
An additional logic that requires multiple nodes (e.g. a whole subtree) may dismiss some of the stored warnings.
@returns {void}