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The type of the sys filter propertyis the statically defined SysFilter sort. Boolean filter accepts values of sort Boolean and could be used only on fields with kind Boolean. _contains filter is case insensitive and must be a minimum of 2 characters long towork. The _contains filter is analogous to the [match] filter in the REST APIcontent. To the insurance trade, a valuablecomponent of the prefatory materials was a description of the fire-fightingequipment and water system of a