src/vs/editor/browser/controller/textAreaInput.ts/InMemoryClipboardMetadataManager/get
class InMemoryClipboardMetadataManager:	public get(pastedText: string): ClipboardStoredMetadata | null {
		if (this._lastState && this._lastState.lastCopiedValue === pastedText) {
			// match!
			return this._lastState.data;
		}
		this._lastState = null;
		return null;
	}