Defined in vss.d.ts
Specifies a constraint that can be used to dynamically include/exclude a given contribution
group: number. An optional property that can be specified to group constraints together. All constraints within a group are AND'd together (all must be evaluate to True in order for the contribution to be included). Different groups of constraints are OR'd (only one group needs to evaluate to True for the contribution to be included).
inverse: boolean. If true, negate the result of the filter (include the contribution if the applied filter returns false instead of true)
name: string. Name of the IContributionFilter class
properties: any. Properties that are fed to the contribution filter class