Requiring a landlord, or a landlord’s duly authorized agent, at the time of filing a certain complaint in an action for repossession for failure to pay rent to submit documents demonstrating a property, is in compliance with certain local license requirements and certain lead-based paint abatement laws; specifying that a provisional or temporary license is insufficient to satisfy certain filing requirements; providing that a landlord has the burden of proving that a property is in compliance with certain requirements; etc.