How to use the ngx-custom-validators.CustomValidators.notEqual function in ngx-custom-validators

params: ["lt"]
    },
    lte: {
      func: CustomValidators.lte,
      params: ["lte"]
    },
    maxDate: {
      func: CustomValidators.maxDate,
      params: ["maxDate"]
    },
    minDate: {
      func: CustomValidators.minDate,
      params: ["minDate"]
    },
    notEqual: {
      func: CustomValidators.notEqual,
      params: ["notEqual"]
    },
    notEqualTo: {
      func: CustomValidators.notEqualTo,
      params: ["notEqualTo"]
    },
    number: {
      func: CustomValidators.number
    },
    range: {
      func: CustomValidators.range,
      params: ["range"]
    },
    rangeLength: {
      func: CustomValidators.rangeLength,
      params: ["rangeLength"]